Kefir grains themselves are made up of many different species of bacteria and yeasts. Within the cell walls of the grains are cellulose microfibrils which are embedded in a polysaccharide matrix consisting of proteins. That's a lot of complicated words, but kefir grains are multi-complex microorganisms. They are mostly fiber and proteins made from milk caseins and I do love them for all they've done for me. Can You Eat Them? Tune in to learn more. Check out this link: » https://www.culturedfoodlife.com/7-ways-to-use-your-extra-kefir-grains/ » For health tips and recipes, subscribe to our weekly emails. We'll also send you our free Getting Started Guide: http://bit.ly/2BnHpay » Listen to all my podcasts: http://bit.ly/cflpodcast » Become a Biotic Pro Member: http://bit.ly/2kkhwS1 » Cultured Food Recipes: http://bit.ly/2UIfY2x » Health and Food Topics: http://bit.ly/2SdzIOS MY STARTER CULTURES » Milk Kefir Grains: http://bit.ly/2rQ99PE » Easy Kefir: http://bit.ly/2MQ1nPV » Kombucha Starter: http://bit.ly/2g2R9hE » Vegetable Starter: http://bit.ly/2SzzVem » Water Kefir Crystals: http://bit.ly/2irmImW » Sourdough Starter: http://bit.ly/2IjaaXK » Other items in my store: http://bit.ly/2HTKZ27 STAY CONNECTED » Instagram: http://instagram.com/culturedfoodlife/ » Facebook: https://www.facebook.com/CulturedFoodLife/ » Pinterest: http://pinterest.com/donnaschwenk/ » Twitter: https://twitter.com/donnaschwenk Warmly, ❤Donna❤