“Good bread and good grain take time in the kitchen, because what is quickly cooked is heavily digested”
— Popular proverb
For years, I heard the same advice over and over again: “Always choose whole grains because they’re healthier.” And whilst there is certainly some truth in that recommendation, over time I discovered that there is an important piece of the puzzle that is rarely discussed: the way we prepare those grains matters too.
Until relatively recently, I cooked grains in the usual way. However, as I delved deeper into traditional nutrition and explored what current research tells us about these foods, I discovered that many cultures spent centuries using techniques such as soaking, fermenting and sprouting whole grains before eating them.
What I found most fascinating was that these ancestral practices were not simply meaningless traditions. Today, we understand that they may help improve the digestibility of certain grains and enhance the availability of some nutrients.
This isn’t about demonising grains or turning every recipe into a complicated project. Rather, it’s about understanding the foods we put on our tables a little better and rediscovering traditional knowledge that may still have a place in our modern kitchens.
The key to a healthy cereal is not just in the grain, but in how you prepare it.
Our Ancestors Didn’t Prepare Grains the Way We Do Today
When we think about traditional diets, we often imagine simple meals made from minimally processed ingredients. But alongside what people ate, it’s equally important to consider how they prepared those foods.
In many cultures around the world, whole grains were rarely eaten simply boiled and served.
Instead, a variety of culinary techniques were used to make them easier to digest and potentially more nutritious:
- Extended soaking for several hours or overnight.
- Natural fermentation, as used in traditional sourdough bread making.
- Sprouting, allowing the grain to begin the natural germination process.
- Specific techniques such as nixtamalisation of maize, traditionally practised in Central America.
These methods emerged long before laboratories or scientific studies existed. They were most likely the result of generations of observation and culinary experience.
Today, modern science is beginning to better understand some of the mechanisms behind these traditional practices and is supporting their use.
What Are Phytates and Why Is It Helpful to Understand Them?
One of the concepts most frequently mentioned when discussing whole grains is phytic acid, also known as phytate.
Phytates are naturally occurring compounds found mainly in:
- Whole grains,
- Legumes,
- Nuts,
- Seeds.
From the plant’s perspective, they serve an important purpose: acting as a storage form of phosphorus and other nutrients needed for future growth.
However, within the human digestive system, phytates can bind to certain minerals, including:
- Iron,
- Zinc,
- Calcium,
- Magnesium.
When this happens, the absorption of these minerals may be partially reduced.
Should We Be Concerned About Phytates?
The short answer is: it depends on the overall context.
For people eating a varied, nutrient-rich diet, moderate consumption of foods containing phytates is unlikely to pose a significant problem.
In fact, some researchers suggest that phytates may also have antioxidant properties and potential health benefits.
However, in populations whose diets rely heavily on grains and legumes as their primary source of energy, particularly when these foods are consumed without traditional preparation methods, a high phytate intake could contribute to reduced absorption of certain minerals, especially iron and zinc.
So rather than viewing phytates as either “good” or “bad”, it may be more helpful to consider them simply as a nutritional factor worth understanding.
The Biological Mirror: Why Do We Have Problems Digesting Grains?
Unlike herbivores or birds, humans are not anatomically designed to directly process large quantities of raw or whole seeds.
Ruminant animals that eat plant fiber have distinct compartments in their stomachs, teeming with bacteria that ferment and break down these complex structures, as well as remarkably long digestive tracts. In contrast, our digestive system is shorter, ideal for efficiently processing and absorbing food before it begins to putrefy, but less suited to dealing with tough fibers and unprocessed complex proteins.
By soaking or fermenting grains, we allow lactobacilli and other microorganisms in the environment to “pre-digest” the grain for us, doing the heavy lifting in the kitchen that our stomachs cannot replicate naturally.
How Traditional Techniques May Improve the Nutritional Value of Grains
The good news is that some traditional culinary practices appear to help reduce phytate content and improve the digestibility of certain grains.
SOAKING: A Simple Step with Potential Benefits
Soaking simply involves leaving grains in water for several hours before cooking, ideally in an acidic environment.
During this process, naturally occurring enzymes within the grain itself, called phytases, may become activated and help partially break down phytic acid.
In addition, soaking may:
- Slightly reduce certain anti-nutritional compounds,
- Improve texture,
- Reduce cooking time,
- Make grains easier for some people to digest.
How Long Should Grains Be Soaked?
There is no universal rule, but many traditional preparations use approximate soaking times such as:
- Oats: 8–12 hours.
- Brown rice: 8–12 hours (optional).
- Quinoa: 4–8 hours.
- Wheat, spelt or rye intended for fermentation: 12–24 hours.
Food biochemistry studies show that just 7 hours of soaking in warm water with an acidic element is enough to activate phytase, the enzyme present in the grain itself responsible for breaking down phytic acid. By neutralizing phytates, we release minerals and drastically increase the nutritional value of the dish.
Why does a splash of lemon or vinegar change everything?
If you’ve ever wondered whether adding an acidic element to the soaking water is just an old-fashioned cooking myth, modern food biochemistry has a resounding answer: it’s pure science and it’s essential.
Phytic acid doesn’t disappear simply by soaking the grain in water; it needs to be broken down by an enzyme hidden within the grain itself called phytase.
Laboratories and scientific studies have discovered three fascinating truths about this process:
- The pH “switch”: The phytase enzyme is extremely temperamental. Tap water usually has a neutral pH (around 7), an environment where this enzyme remains dormant. Scientists have shown that phytase reaches its maximum activity in a subtly acidic environment (with a pH between 4.5 and 5.5). By adding a few drops of lemon juice, apple cider vinegar, or buttermilk, you calibrate the water to the exact level the enzyme needs to activate and begin breaking down antinutrients.
- Proven dramatic reduction: Research published in scientific nutrition journals (such as Food Chemistry) reveals that soaking in an acidified medium reduces phytic acid in whole grains by 87% to 91%. In comparison, soaking in plain, neutral water eliminates a drastically smaller percentage in the same period.
- Release of trapped minerals: Lowering the pH breaks down the “chelate” (the chemical magnet) that holds iron, zinc, magnesium, and calcium captive within the bran. The direct result is grains with free minerals ready to be effectively absorbed by your children’s intestinal villi.
In addition, this acidic environment has an extra benefit for your countertop: it acts as a protective shield, preventing the growth of pathogenic bacteria while the cereal rests at room temperature, favoring only beneficial microorganisms.
FERMENTATION: When Microorganisms Work in Our Favour
Fermentation has been used for thousands of years to create foods that are both more digestible and longer lasting.
When it comes to grains, perhaps the best-known example is traditional sourdough bread.
Cereal proteins—especially gluten—are highly resistant to our gastric enzymes. A diet saturated with modern, unfermented whole wheat creates chronic stress on the intestinal walls. When this system becomes overloaded due to poor habits, it can lead to inflammatory sensitivities, indigestion, allergies, or chronic fatigue.
During fermentation, beneficial bacteria and yeasts bring about several interesting changes:
- Activating phytases that help reduce phytate levels,
- Partially modifying certain gluten proteins,
- Reducing some fermentable carbohydrates (FODMAPs),
- Developing more complex flavours and aromas.
Several studies suggest that prolonged fermentation may improve the bioavailability of certain minerals found in grains.
Many people also report tolerating traditionally fermented sourdough bread better than industrially produced breads made using rapid fermentation methods.
SPROUTING: Unlocking the Grain’s Potential
Sprouting involves allowing the grain to begin its natural germination process.
To achieve this, grains are soaked and then kept moist for one or more days.
This process may lead to several beneficial changes:
- Partial reduction in phytate levels,
- Increased amounts of certain vitamins,
- Modifications to some proteins and carbohydrates,
- Potential improvements in digestibility.
Although it requires a little more planning, sprouting is another ancestral technique that is experiencing renewed interest today.
Does Fermentation Improve Gluten Digestibility?
This is probably one of the questions that generates the most confusion.
Some research suggests that certain prolonged fermentation processes may partially break down gluten proteins.
This could help explain why some individuals with non-coeliac digestive sensitivities report feeling better when consuming traditionally fermented sourdough bread compared with industrial bread.
However, one important point must be made very clear:
This process does not completely eliminate gluten, so fermented foods (such as traditional sourdough bread) remain unsafe for people with coeliac disease.
Anyone diagnosed with coeliac disease should continue to follow a strict gluten-free diet under appropriate medical guidance.
For everyone else, traditional fermentation may simply be an interesting culinary approach that has the potential to improve the digestibility and flavour of certain foods.
Does This Mean We Should Stop Eating Grains?
Not at all.
Grains have been part of the human diet for thousands of years and provide important nutrients, including:
- Complex carbohydrates,
- Fibre,
- B vitamins,
- Minerals,
- Beneficial bioactive compounds.
The aim of this article is not to create fear around grains or suggest that they should be eliminated from the diet.
Rather, the idea is to encourage a broader perspective:
It’s not only what we eat that matters, but also how we prepare it.
Our ancestors may not have understood concepts such as phytates or bioavailability, but they developed culinary practices that may have improved the digestibility and nutritional value of certain foods.
And that’s precisely what makes exploring traditional wisdom through the lens of modern science so fascinating.
Grain Classification and Correct Preparation Times
To make things easier for you, we can divide grains into two main groups based on their protein structure:
Gluten-Containing Grains (Wheat, Rye, Barley)
Golden Rule: They should always undergo long soaking (at least 8-12 hours) or natural fermentation processes (like sourdough). This softens their proteins and makes them easier for your gut to digest.
Gluten-Free Grains and Pseudocereals (Rice, Millet, Buckwheat, Quinoa)
Golden Rule: Their whole-grain versions have slightly lower or different phytate concentrations. While soaking is still ideal for shortening cooking times, cooking them slowly and for a long time also helps neutralize antinutrients. If you only cook them, be sure to wash them thoroughly beforehand.
Dictionary of Ancient and Specialty Varieties
If you want to enrich your family’s menu, these varieties offer wonderful nutritional profiles if you take care of them in the kitchen:
Rye
Excellent for dense breads. It requires long fermentations with sourdough to neutralize its high phytate levels.
Spelt
An ancient variety of wheat. Various analyses show that its gluten chains are more fragile, so they break down more easily during fermentation, making it much more digestible for people who find common wheat heavy.
Kamut
Originating in ancient Egypt, it is a non-hybrid grain. Like spelt, many people with non-coeliac sensitivities to conventional wheat report tolerating it significantly better.
Corn
Traditionally in Mesoamerica, corn was processed through nixtamalization (cooking and soaking the grain in lime water or wood ash). This alkaline environment releases nicotinamide (Vitamin B3)—which is otherwise trapped—and improves the amino acid balance of your proteins. If you frequently consume corn or polenta, keep this in mind or look for nixtamalized flours.
Teff
A tiny grain from North Africa (a staple food in Ethiopia). Traditionally, it is fermented for days to make injera bread, which guarantees very high protein absorption.
Quinoa
Technically a seed in the rhubarb and spinach family (a pseudocereal). Described in the West in the journals of Dr. Weston Price, Andean mothers consumed it to stimulate breast milk production. It should be rinsed very well under running water to remove bitter saponins and soaked before boiling.
Amaranth
Another pre-Hispanic treasure with high protein content. When soaked, it becomes a fantastic option for digestive creams.
Buckwheat
This isn’t a cereal either, but a seed related to rhubarb. It stands out for its antioxidant content and plant compounds like nitrilosides (associated in nutritional studies with cell-protective properties).
Conclusion: My Journey Towards Mindful Cooking
To be completely honest, until very recently I had no idea about any of this. I was totally used to the convenience of modern recipes and thought that by choosing the “whole grain” label I was already doing just fine for my family.
And truthfully, it never crossed my mind that there might be another way to do things.
When I discovered traditional soaking and fermentation practices, I was surprised to find that many of them made sense from a modern scientific perspective.
I’m not going to say that I now soak absolutely every grain that comes into my kitchen, because that wouldn’t be true.
But I am gradually incorporating these techniques.
Sometimes soaking oats overnight for breakfast. Other times I use sourdough starter. And often I simply do what I can with the time and energy available that day.
And I think that’s an important part of the message I want to convey.
Food shouldn’t become another source of stress or perfectionism.
It’s about learning, trying new things, and making small changes that, maintained over time, can benefit our health and that of our families.
Now, little by little and without pressure, I’m experimenting at home with these soaking and fermentation methods. Although classic porridge sometimes doesn’t quite hit the mark at my table, I don’t give up and I’m looking for new, creative ways to present it.
But I find it comforting to think that small changes, introduced gradually over time, may help us care for our health and build more mindful habits for our children.
I will continue experimenting and learning in my own kitchen, sharing what I discover, what works for my family, and what I believe is worth bringing back into modern life.
Because nourishing the people we love isn’t about getting everything perfect.
It’s about making small improvements, day by day.
I know that every little grain I transform in the kitchen is one more step towards better feeding my family and building a solid foundation of health for our children’s future.
And perhaps those small changes, repeated over the years, may become one of the greatest gifts we can pass on to future generations.
Glossary
Phytic acid (phytates): Naturally occurring compounds found in grains, legumes and seeds that can reduce the absorption of certain minerals.
Bioavailability: The proportion of a nutrient that can actually be absorbed and used by the body.
Phytases: Enzymes capable of partially breaking down phytic acid.
Fermentation: A process in which beneficial microorganisms transform certain components of food.
Sourdough starter: A natural culture of wild yeasts and bacteria traditionally used to make bread.
Nixtamalisation: A traditional Mesoamerican technique involving cooking maize in an alkaline solution to improve its nutritional value.
Pseudocereals: Seeds used similarly to grains, despite belonging to different botanical families, such as quinoa and buckwheat.
References and Further Reading
Schlemmer U, et al. Phytate in foods and significance for humans: Food sources, intake, processing, bioavailability and protective role. Molecular Nutrition & Food Research.
Lopez HW, et al. The importance of phytic acid degradation in a human diet. Nutrition Research Reviews.
Hurrell RF. Influence of vegetable protein sources on trace element and mineral bioavailability. Journal of Nutrition.
Poutanen K, et al. Sourdough and cereal fermentation in a nutritional perspective. Food Microbiology.
Gobbetti M, et al. Sourdough lactic acid bacteria and celiac disease. Food Microbiology.
Harvard T.H. Chan School of Public Health – The Nutrition Source: Whole Grains.
FAO/WHO. Carbohydrates in Human Nutrition.
Slavin J. Whole grains and human health. Nutrition Research Reviews.
Fallon S, Enig MG. Nourishing Traditions.
Disclaimer: This article is intended for educational and informational purposes only. If you have coeliac disease, food allergies or any specific medical condition, always seek personalised advice from a qualified healthcare professional.
FAQ — Frequently Asked Questions About Whole Grains
Why do whole grains cause wind or bloating?
Contrary to popular belief, bloating is rarely caused by the grain itself, but rather by the presence of untreated phytic acid and tough fibres. If you cook them straight from the packet, your digestive system has to do an absolute mountain of work to break down those plant walls, which leads to bowel inflammation. By soaking them beforehand, you activate enzymes that “pre-digest” the grain, significantly reducing wind and discomfort.
Do all whole grains need to be soaked?
No. Soaking is a useful tool that may improve digestibility and partially reduce phytate content, but it isn’t essential for every grain or every individual.
It may be particularly beneficial if you:
- Eat large amounts of whole grains,
- Follow a predominantly plant-based diet,
- Have a sensitive digestive system,
- Wish to incorporate more traditional food preparation methods.
Although gluten-free grains (such as millet, brown rice, quinoa, or buckwheat) have slightly lower phytate levels and their proteins are less harsh on the gut, soaking is still highly recommended. You can skip soaking these grains, but in return, you’ll need to cook them very slowly for an extended period to ensure that the antinutrients are completely broken down by the heat.
How long should grains be soaked?
Soaking time varies depending on the hardness of the grain, ranging from 2 to 24 hours. The density of the grain’s outer layer (the bran) determines the rate of water absorption. Whole grains retain more phytic acid in the bran, so they need longer soaking times to activate the phytase enzymes that break down this compound.
Soaking Time Guide by Grain Type
- Very hard grains (12 to 24 hours): Whole wheat, spelt, rye, barley, and wild rice.
- Medium grains (8 to 12 hours / Overnight): Brown rice, whole oats, and steel-cut oats.
- Soft or small grains (2 to 6 hours): Millet, sorghum, and buckwheat.
- Pseudocereals (1 to 4 hours): Quinoa and amaranth (require less time; in the case of quinoa, thorough washing is more critical to remove bitter saponins).
Is it strictly necessary to throw away the soaking water?
Yes, if you are doing a standard soak (7 to 12 hours): During this timeframe, antinutrients and enzyme inhibitors detach from the grain and end up floating in the water, turning it into a bit of a waste dump. You must drain it, throw that liquid away, and rinse the grain thoroughly under the cold tap before cooking.
The exception is long fermentations (over 24 hours): If you are actively fermenting the grain (such as making sourdough bread or traditional fermented porridge), you don’t need to throw it away. In this case, the friendly lactobacilli and wild yeasts have already “eaten” and completely transformed those antinutrients, turning the liquid into a digestive elixir packed with gut-friendly life.
What is the difference between "soaking" and "fermenting" a grain?
The line is fine but crucial:
- Soaking is the basic initial step (usually overnight) to wake up the grain’s enzymes and deactivate the phytic acid.
- Fermentation happens when you extend that time (24 to 48 hours or more) or introduce a live culture (like sourdough starter or yoghurt). You will know it is fermenting when you see tiny bubbles or foam on the surface and catch a subtly sour, pleasant aroma. This process breaks down gluten and complex proteins to the absolute maximum.
Are phytates always harmful?
No. Although they can partially reduce the absorption of certain minerals, phytates also possess antioxidant properties and may offer health benefits.
As with many aspects of nutrition, the overall dietary context is what matters most.
Does sourdough completely eliminate gluten?
No. Long fermentation processes may partially modify some gluten proteins and improve digestibility for certain individuals.
However, people with coeliac disease should continue to follow a strict gluten-free diet and should not assume that sourdough bread is safe for them.
Is sourdough bread better?
Yes, sourdough bread is noticeably better than commercially produced white bread, both nutritionally and in terms of digestion.
Its superiority isn’t due to the basic ingredients (which remain flour, water, and salt), but rather to the prolonged biological fermentation process that transforms the structure of the grain.
Do whole grains help with weight loss?
Properly prepared whole grains help regulate blood glucose and insulin levels, preventing those dreaded energy crashes that lead to sudden sugar cravings.
Furthermore, because they retain their natural, unprocessed fibre, they provide a much longer-lasting feeling of fullness than white rice or refined flours, making it much easier to manage your appetite throughout the day.
Can you freeze grains once they are cooked?
Absolutely! This is a brilliant time-saving hack for busy mums. You can batch-cook a large quantity of quinoa, brown rice, or spelt (following the soaking and slow-cooking steps), let it cool down completely, and freeze it in individual portions. It will keep perfectly for up to 3 months. When you need it, simply reheat it gently in a pan with a splash of water or broth to restore its lovely texture.
Should we remove grains from our diet?
Not at all. Grains can form part of a healthy and balanced diet. The purpose of this article is not to eliminate them, but rather to explore traditional ways of preparing them that may support better digestibility and nutrient availability.
Which grain is the healthiest?
There isn’t a single “best” grain. Different grains provide different nutrients and may suit different preferences and needs.
Variety remains one of the most valuable principles of good nutrition.