The impact of the post-Columbian exchange on both New World and Old World cultures can be examined through college student analyses of ethnic recipes. Working independently or in a classroom exercise, the student selects a recipe, identifies the world region of domestication of each ingredient listed, determines to what extent the ethnic recipe is comprised of native foods, and suggests what cultural processes may be involved in the evolution of the recipe. Information sources, lists of domesticated biota by region and type, and two sample recipes are presented to illustrate the methodology.