Treat your gut to homemade milk kefir, one of our most probiotic-rich cultures. Just one box will culture 4 cups every day. Drink it up, or enjoy your kefir in smoothies, ice cream, baked goods, and much more. Shelf stable. 1 case contains 8 units. Quality Tested We test our cultures for the presence of coliform - a bacteria contamination that leads to potential health risks. Safe Food Consumption is Less Than 10/cfu/ml Our Milk Kefir Grains Level of Coliform Present: <10 cfu/ml Brand One Milk Kefir Grains Level of Coliform Present: 4,400,000 cfu/ml Brand Two Milk Kefir Grains Level of Coliform Present: 30 cfu/ml Single Item Details: UPC: 814598020018 MSRP: $22.99