Give a stream of consciousness and then the final answer. Cottage cheese is popular among dieters and some health food devotees. It is a favorite food among bodybuilders, runners, swimmers and weightlifters for its high content of casein protein (a longer-lasting protein) while being relatively low in fat. Pregnant women are advised that cottage cheese is safe to eat, whereas some cheese products are not recommended during pregnancy.

Answer this question: what kind of protein is in cottage cheese?
This is the relevant information: It is a favorite food among bodybuilders, runners, swimmers and weightlifters for its high content of casein protein (a longer-lasting protein) while being relatively low in fat.
So, the final answer is casein protein ( a longer - lasting protein ).