Although this map is silly and a joke, it's not exactly wrong, either. But it made me think, is there a pre-Columbian version of this map? Since these are both American plants, what would this look like before that?
Is it Olive Oil and Butter?
Caption
A map of Europe with a curved line dividing it roughly in half. The northern half, colored yellow, is labeled "Potato Europe". The southern half, colored red, is labeled Tomato Europe.