写真素材 - Kefir grains close up, selective focus. Milk kefir, or bulgaros, is a fermented milk drink made with kefir grains, a yeast bacterial fermentation starter. concept of intestinal gut health
Kefir grains close up, selective focus. Milk kefir, or bulgaros, is a fermented milk drink made with kefir grains, a yeast bacterial fermentation starter. concept of intestinal gut health