1.
Soak buckwheat in a jar with 500 ml of water for 8–12 hours.
2.
Drain the water, rinse the container, and return the buckwheat kernels to the container. Place the container in a warm place out of direct sunlight. Make sure the kernels remain moist in the jar.
3.
Rinse the kernels once or twice daily to prevent unwanted yeasts or molds from forming.
4.
After a few days, sprouts will grow from the grains. Rinse the sprouted grains one last time.
5.
Cover the grains with 1500 ml of water (preferably filtered) and let stand for 1–3 days until the water becomes cloudy and smells pleasantly lemony. The finished rejuvelac has a sharp, slightly spicy taste and a mild, earthy aroma. Note that the flavor can vary from grain to grain.
6.
Pour off 60 ml of the liquid for further processing for the probiotic nut cheese.
7.
Pour the remaining rejuvelac into a jar. This can be used as a digestive aid, for example in smoothies. The sprouted grains can be used to make crackers or as a seasoning for salads, soups, or compost.