Although this is a wonderful ice cream recipe (IMHO), it is an old one, and contains raw egg. Please feel free to use a fresh egg substitute or pasteurized eggs in this recipe. You may leave out the egg altogether, but the texture may suffer. The "Cook time" is for the processing time of my (your) ice cream machine. The 1/2 to 1 hour "chill time" was not included in the Prep/Cook time.