Kashrut

My friend Yaakov* often travels in places where there are no kosher products available, and he has amassed a list of items that he can eat and drink wherever he finds himself. He told me that someone once told him that when traveling he may eat cottage cheese without any hechsher. What is the rationale for this psak?

The laws of Kosher wine, Yayin Nesech, Stam Yeynam and wine made or touched by a non Jew.