Kylmä Co. · Finland
The Science of Wild Harvesting: Why Nordic Forests Grow Better Berries
Berries produce anthocyanins, polyphenols, and organic acids as a response to environmental stress. Not as a luxury — as a necessity. The plant uses these compounds to protect itself from UV radiation, pathogens and physical damage. The harsher the environment, the more the plant needs to produce them. Finnish boreal forests provide several of these stressors simultaneously. The Midnight Sun brings continuous UV exposure through the summer months. Finland sits between roughly 60 and 70 degrees north, and in July the sun barely dips below the horizon. Berry plants on the forest floor absorb UV all day and through the night. They respond by loading the berry with protective pigments — which is why Finnish wild bilberries are measurably darker than bilberries grown at lower latitudes. The winters are long and cold. Hard frosts kill pathogens and pests naturally. The berry bushes survive because they are adapted for it, and they emerge in spring having been through conditions that any commercial crop would require chemical protection against. The soil is acidic and mineral-rich but not fertile. These are not conditions under which plants grow fast or large — they grow slowly, concentrating their resources rather than expanding them. Wild bilberries are small, dense and intense precisely because the environment doesn’t reward rapid growth.
The berries grow wild — there is no farming involved at all. The forest does the work. The berries are not organic-certified.
The harvesting itself follows Jokamiehenoikeus — Everyman’s Right. This is a Finnish legal and cultural principle that grants every person the right to move freely in the countryside and forage for wild foods including berries and mushrooms. The conditions are simple: leave no trace, cause no damage, respect the land. Under Jokamiehenoikeus, our foragers pick by hand, moving through the forest floor without machinery. The berry bushes are perennial — the same root systems produce year after year, provided the plants are picked and not damaged.
From Peak Ripeness to Frozen Within Hours
Anthocyanins and the aromatic compounds begin degrading within hours of picking, faster in heat and with oxygen exposure. The gap between peak ripeness in the forest and the start of processing determines how much of the berry’s potential survives.
Our supply chain is built around minimising that gap. Berries are picked at peak ripeness by foragers who know the forest and the timing. They are frozen within hours of harvest. Flash-freezing at this stage locks the colour and the flavour before significant degradation can begin.
For bilberries, the freeze-drying that follows removes the water while the berry is still frozen — no heat, no liquid phase. Our other berries are air-dried at low temperature.
What Wild-Harvested Means
Commercial berry farming optimises for yield, uniformity and shelf life. Berries are bred to grow large and ripen simultaneously. The soil is supplemented with fertilisers that encourage rapid growth. The result is a consistent product.
Wild berries grow under no such pressure. They grow slowly, in nutrient-poor soils, under conditions that would destroy a commercial crop.
Frequently Asked Questions
What is Jokamiehenoikeus?
Jokamiehenoikeus — Everyman’s Right — is a Finnish legal principle granting every person the right to roam freely in the countryside and forage for wild foods such as berries and mushrooms. The conditions: leave no trace, cause no damage, respect the privacy of dwellings. It is the legal foundation for wild harvesting in Finland and has been in place for centuries.
Are wild Finnish berries certified organic?
No. Our berries are not organic-certified.
Why are Nordic wild berries darker?
The combination of the midnight sun, cold winters that naturally suppress pests, acidic glacial soils that trigger polyphenol production, and the absence of agricultural intervention creates conditions that force the plant to produce more pigment.
Do Kylmä Co. products contain any additives?
No. All products are single-ingredient — one berry, dried, nothing else. No preservatives, no anti-caking agents, no carriers. The ingredient list on every product is exactly one word.
From our shop: Nordic Berry Starter Kit →