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Helsieni grows oyster mushrooms using only local materials, like spent coffee grounds collected from nearby cafes. After harvest, the growing medium is reused or composted back into the soil. Based in Karjaa, they also run workshops, offer advice for mushroom growers, and make home kits so anyone can try growing mushrooms themselves.

Kaiteki Sienet brings together professionals from around the world to cultivate some of Finland’s finest organic mushrooms. Founded by true culinary enthusiasts Juha, Ying, and Peng, the mushroom farm is driven by a love of bold flavours and thoughtful growing practices. They currently grow organic Japanese shiitake, oyster mushrooms, and lion’s mane for both culinary and medicinal use. The mushrooms are cultivated on locally sourced Finnish birch and organic wheat. After harvest, the growing medium is composted and returned to the land, supporting local crop production and closing the loop.