Please note that this ad is NOT FOR KEFIR GRAINS, but for the kefir DRINK. Sorry, I do not have any spare grains for free or sale. Kefir is a probiotic drink cultured / fermented by feeding kefir grains various types of milk (I use goat's or pastured cow's milk). It is similar to yogurt, but thinner. You can check these links for recipes, if you are not familiar with kefir or do a web search: https://kefirculture.com/what-is-milk-kefir/ https://www.urbanfermentation.com/how-milk-kefir-can-be-used-for-cooking-almost-anything/ https://www.fermentingforfoodies.com/kefir-cheese/ I am not able to provide you with any health related/medicinal properties advise. I am simply sharing this product with those familiar and interested in kefir for free. I have about 2 litres available weekly. Pick up any day in Central Saanich / Saanichton. Serious inquiries only please. If ad is up kefir is available.