McMuffin McMuffin McMuffin is a family of breakfast sandwiches sold by the international fast food restaurant chain McDonald's. The Egg McMuffin is the signature sandwich, which was invented in 1972 by Herb Peterson to resemble eggs Benedict, a traditional American breakfast dish with English muffins, ham, eggs and hollandaise sauce. In the US and Canada the standard McMuffin consists of a slice of Canadian bacon, a griddle-fried egg, and a slice of American cheese on a toasted and buttered English muffin. The round shape of the egg is made by cooking it in a white plastic ring surrounded by an outer
Pasteurized eggs to maintain freshness and prevent environmental contamination and stamped with a blue "P" in a circle to distinguish them from unpasteurized eggs. Opinion on the quality of pasteurized shell eggs is mixed, and sometimes depends on whether comparisons involve experimental processes or products that are actually on the market. Taste tests noted deficiencies in pasteurized shell eggs experimentally produced via a microwaved pasteurization process (not for commercially available pasteurized shell eggs). Using commercially available pasteurized shell eggs, a "San Francisco Chronicle" reporter noted a "slight chemical taste" for pasteurized shell eggs, and a Lifescript blogger noted a "barely detectable" flavor