Ryazhenka is a Russian and Ukrainian fermented milk drink made from milk and cream baked for several hours until light brown, then soured with lactic acid bacteria; it tastes mild and caramel-like. A 250 ml glass has about 175 kcal, 7 g of protein and 10 g of fat, 6 g of it saturated, and gives about 290 mg of calcium; it is high in vitamin B12 and riboflavin. It is richer than 2.5% kefir, and the long baking lowers some B vitamins.