what food is casein found in
Casein in Foods. Most dairy products contain casein, but not all. Since casein is a protein, it is found in dairy products that have a higher protein content, such as milk, yogurt, kefir, cheese and ice cream.Dairy products that contain barely any protein, such as butter and cream, only have traces of casein.ince casein is a protein, it is found in dairy products that have a higher protein content, such as milk, yogurt, kefir, cheese and ice cream. Dairy products that contain barely any protein, such as butter and cream, only have traces of casein.