Cheese of Islam and Judaism must avoid cheeses made with rennet from animals not slaughtered in a manner adhering to halal or kosher laws. Both faiths allow cheese made with vegetable-based rennet or with rennet made from animals that were processed in a halal or kosher manner. Many less orthodox Jews also believe that rennet undergoes enough processing to change its nature entirely and do not consider it to ever violate kosher law. (See "Cheese and kashrut".) As cheese is a dairy food, under kosher rules it cannot be eaten in the same meal with any meat. Rennet derived from animal
Leyden cheese temperatures. Farmers in the area near Leiden added cumin seeds and used to colour their cheeses using annatto, which gives the cheese its red color. Traditional farm-made "Leidse kaas" is a Protected Designation of Origin named "Boeren-Leidse met sleutels". The addition "met sleutels" (with keys) stems from the city of Leiden's coat of arms that bears a set of keys. A typical analysis of the cheese is: Moisture 40.6%, fat 13.5% and protein, 37.3% Leyden cheese Leyden, from , is a semi-hard, cumin and caraway seed flavoured cheese made in the Netherlands from cow's milk. It is made both in