This presentation looks at patterns of immigration to the United States in the 20th century and how the integration of new groups of immigrants into American society is reflected in our cookbooks and food preferences. At what point did pizza become as American as apple pie? Is our identity as Americans changed now that salsa outsells ketchup? This presentation involves audience participation. It invites the audience to think about the ways in which what we cook and eat influences our identity as Americans, and about the ways our changing demographics change what we eat.