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
Processed cheese varieties of Kraft Singles formerly labeled "pasteurized process cheese food" became "pasteurized prepared cheese product," Velveeta was relabeled from "pasteurized process cheese spread" to "pasteurized prepared cheese product," and Easy Cheese from "pasteurized process cheese spread" to "pasteurized cheese snack." Processed cheese Processed cheese (also known as prepared cheese, cheese product, or cheese singles) is a food product made from cheese (and sometimes other, unfermented, dairy by-product ingredients), plus emulsifiers, saturated vegetable oils, extra salt, food colorings, whey or sugar. As a result, many flavors, colors, and textures of processed cheese exist. Its invention is credited to Walter Gerber of