Marika goes to the field. She picks the first ripe strawberry—a little dirt still clinging to it, which is perfectly fine—and simply eats it. Warm from the sun. Directly from the bush. Winnie does the same. No hesitation. No washing. Simply: strawberry. Pure enjoyment. Done.
Dad turns it into a mess with whipped cream—because he thinks it's simply the best way to eat strawberries. Mom bakes a sponge cake with jelly—because she believes some fruits deserve such a presentation. Andreas cuts them into his oatmeal. And for Mother's Day—it was a Pavlova. Meringue bases, mascarpone-vanilla cream, strawberries. Wonderful.
One fruit. Five ways to enjoy it.
And ever since my sister enlightened us once again—she does this regularly, and we're grateful for it—about how healthy they are, we eat strawberries without guilt and without restraint. Because what's packed into this small red fruit is simply impressive.
What's inside a strawberry
The strawberry is one of the most nutrient-dense fruits available—and at the same time, one of the lowest in calories. 100 grams of strawberries contain only 32 kilocalories. For that, we get a package that's truly impressive.
★ Vitamin C in abundance.
Strawberries are among the richest sources of Vitamin C among native fruits. 100 grams of fresh strawberries provide approximately 60 milligrams of Vitamin C—which corresponds to about 75 percent of an adult's recommended daily intake. More than an orange. More than a lemon. And all in a fruit you can pop into your mouth almost without thinking.
Vitamin C is not just an immune helper. It is essential for the formation of collagen—the protein that holds skin, bones, blood vessels, and connective tissue together. It protects cells from oxidative stress. It improves iron absorption from plant-based foods. And it is a powerful antioxidant that neutralizes free radicals before they can cause damage.
★ Folic acid for cell health.
Strawberries are a good plant-based source of folic acid—one of the B vitamins that plays a central role in cell division, DNA synthesis, and especially during pregnancy.
★ Potassium for heart and blood pressure.
With around 150 milligrams of potassium per 100 grams, strawberries support blood pressure regulation and heart function.
★ Manganese as an enzyme activator.
Manganese is a trace element that plays a role in activating important enzymes—including those in antioxidant defense. Strawberries are among the best plant-based sources of manganese.
★ Fiber for the gut.
Around 2 grams of fiber per 100 grams—pectin and cellulose—which nourish the gut microbiome, regulate digestion, and promote a feeling of fullness.
The secret stars—ellagic acid and anthocyanins
The best-known nutrients in strawberries are Vitamin C and folic acid. But the truly exciting substances are the secondary plant compounds—and strawberries have a lot of them.
Anthocyanins—the plant pigments that give strawberries their intense red color—are the same compounds we know from red onions and blueberries. They have strong antioxidant and anti-inflammatory effects and protect cell membranes. Studies show that regular intake of anthocyanin-rich foods is associated with a lower risk of heart disease and certain types of cancer.
Ellagic acid is a polyphenol that occurs in this concentration almost exclusively in strawberries and raspberries. Ellagic acid is converted in the body into urolithins—substances that are being intensively researched, particularly in connection with cell health, anti-inflammatory properties, and the health of the gut microbiome.
Quercetin, kaempferol, and catechins—other flavonoids found in strawberries that, together with anthocyanins, form a powerful antioxidant network.
The strawberry secret: Why harvesting when ripe is everything
This is the core of it all—and exactly what makes Marika's method so right.
Strawberries develop their beneficial compounds only in the last few days before full ripeness. Anthocyanins, ellagic acid, quercetin—all these secondary plant compounds form in the final stage of ripening. A strawberry picked unripe and then expected to "ripen" on its way to the supermarket never gets the chance to fully develop these compounds.
Furthermore: Vitamin C is sensitive to light and heat. A strawberry transported for days and stored in the supermarket measurably loses Vitamin C. A strawberry that was still on the bush today—like Marika's—retains its full potential.
And one more thing: the Brix value. A fully ripe strawberry from good soil has a Brix value of 14 to 16°—the "excellent" range on the Reams scale. An unripe supermarket strawberry often barely reaches 6° Brix. This is not just a difference in taste. It's a difference in nutrient density.
The dirt still clinging to it? That's perfectly fine. Really.
What the Brix value reveals about strawberries
The Brix value is particularly insightful for strawberries—because the sugar in strawberries is directly linked to anthocyanin development. A sweeter strawberry is generally also a strawberry richer in anthocyanins.
According to the Reams Reference Chart:
Poor: under 6° Brix — little flavor, few nutrients
Average: 10° Brix — this is the typical supermarket strawberry
Good: 14° Brix — real garden strawberry, fully ripe
Excellent: 16° Brix and above — this is Marika's strawberry from Mom's garden with dirt on it
The difference between 6 and 16° Brix isn't just noticed by the tongue. The body notices it. It receives two and a half times more of what it truly needs.
Fresh, dried, frozen, cooked—what does what?
Fresh: The best way. All nutrients fully intact, nothing lost. Best straight from the bush or farmers' market.
Frozen: Surprisingly good. Studies show that frozen strawberries retain their Vitamin C content and anthocyanins very well—often better than strawberries stored fresh in the refrigerator for days. If you have a good harvest: freezing is a wonderful option.
Cooked into jam: Vitamin C is partially lost due to heat—but anthocyanins are surprisingly heat-stable. Homemade strawberry jam with little sugar retains more nutrients than you might think. Mom knows what she's doing.
As a mash with whipped cream: Dad isn't entirely wrong biochemically. The fats in whipped cream improve the absorption of fat-soluble substances—and mashing makes the strawberry's cell walls more permeable, meaning more nutrients are released and absorbed by the body. This isn't theory. It's physics.
In the Pavlova: For Mother's Day, enjoyment takes precedence anyway. And that's perfectly fine.
In oatmeal: Andreas's variant is actually nutritionally brilliant. The fiber from the oats and the pectin from the strawberries work together on the gut microbiome. Plus, the Vitamin C from the strawberries improves iron absorption from the oats. Chapeau.
What Winnie knows—and we sometimes forget
Winnie—our divorce orphan, who found a perfect home with grandma and grandpa—goes directly to the bush. No hesitation. No weighing. Instinct.
Dogs have a highly developed instinct for ripe fruits—the sweetness of ripeness, the scent of complete aroma molecules, the soft texture. Winnie always chooses the ripest strawberry. Not because she knows Brix. But because her body tells her.
Perhaps this is the simplest dietary rule there is: Eat what Winnie would eat. (This is written with a romanticized slant by me. Winnie was sometimes forgotten in her previous life and then learned to eat anything that looked edible. So the comparison is a bit off, but it was too good to pass up). Directly from the bush. Warm from the sun. With a little dirt on it, if need be.
Strawberries and the soil—what belongs together
The most beautiful strawberry grows in the right soil.
Strawberries are very sensitive to mineral supply—especially calcium, which strengthens cell walls and makes the fruit firm and storable. If the strawberry plant lacks calcium, soft fruits that quickly mold will develop. Plants well-supplied with calcium—through foliar fertilization with "Grünkraft Calcium" or through soil rich in available calcium—bear firmer, more storable, more aromatic fruits. In this article, you can read exactly how to get nutrient-rich strawberries step-by-step. And we've also written a lot about diseases. Planting nutrient-rich strawberries - understanding diseases, building soil, increasing Brix.
Field studies with activated calcite have also shown this: treated strawberry plants ripen earlier and bear longer—the vegetation and production period is extended by 15 to 30 days. The fruits remain fresh significantly longer after harvesting. The sugar content increases. And the taste—it becomes deeper, rounder, more intense.
Zeolite in the strawberry bed keeps moisture even—strawberries are very sensitive to drought stress and benefit enormously from a balanced water regime in the soil. AM+PLUS microorganisms build up soil life that makes minerals available to the strawberry plant.
And then: Measure Brix. And compare it to a strawberry from the supermarket.
Conclusion
My sister is right. She's usually right when it comes to nutrients. Also with exercises.
The strawberry is not a luxury. It's not a dessert you have to earn. It's food in the best sense of the word—nutrient-dense, seasonal, regional, beautiful.
Eat it without guilt. Eat it in all its versions. As a mash, on biscuit, on Pavlova, in oatmeal, directly from the field.
And if a little dirt sticks to it—that really doesn't matter at all.
More about the Brix value and why nutrient-rich foods are measurable—in our article on Brix measurements and refractometers.
Why food today has fewer nutrients than before—and what soil health has to do with it—in the article on minerals and damaged soils.
All products for the garden—Zeolite, basalt, and AM+PLUS—in our Garden Collection.
Sources:
Deutsche Gesellschaft für Ernährung, Nährwerte Erdbeere | Zentrum der Gesundheit, Erdbeeren Inhaltsstoffe | Verbraucherzentrale, Vitamin C in Beeren | Bhagwat et al., USDA Database for the Flavonoid Content of Selected Foods | Seeram et al., Ellagic Acid, Pomegranate Polyphenols and Urolithins | Dr. Carey Reams, Brix-Referenztabellen für Früchte | Oekomineral Group / Tribo Technologies, Feldstudien Erdbeere und Plantos Verde 2011–2014
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