The Beijing Computational Science Research Centre produced this map of China showing the country’s numerous and varied regional cuisines.
They began by downloading all the recipes from a Chinese recipe website called Meishijie. This contained almost 8500 recipes based on nearly 3000 ingredients. They grouped the recipes according to their origin in one of 20 regions. Finally they created a food web consisting of the set of all recipes on the set of all ingredients. Where recipe contains an ingredient they draw a link between them. Since each recipe belongs to anyone regional cuisines these links can then also be categorised into cuisines. Counting these links shows how prevalent each ingredient is in each cuisine.
[Via: The Atlantic]