I have water kefir grains available. Let me know if you are interested and I’ll bring some in from home.
Water kefir (aka tibicos, tibi, Japanese water crystals) is a fermented non-dairy probiotic drink. The “grains” are the starter culture. To read about it and different recipes check out these links:
Yemoos Water Kefir Instructions
Again, after you read up on it. Let me know if you’d like to try it. I’ll provide 1-2 tbsp of grains.