Once a cheese is certified as a Kosher Cheese, its packaging is labeled with a kosher symbol, which identifies the kosher certifying agency. The most famous kosher symbol in the US is the "OU" symbol of the Orthodox Union. read more
If the cheese is a soft cheese that doesn't usually require animal rennet, then read the label and if it has no rennet then it is kosher. These types of cheeses include mazzarella, ricotta, cream cheese, Greek yogurts, labneh, etc. read more
A number of mainstream cheese companies have taken the kosher plunge and chosen the O.U. certification, as it is the most recognized kosher symbol today. read more