People are omnivores. We can eat practically anything, and collectively we pretty much do. Worldwide, the human diet encompasses everything from fried brains and fermented seal flipper to ant larvae, chicken feet, grasshoppers, guinea pig, giraffe, and kangaroo. In Japan, you can buy tuna eyeballs for dinner, packaged in plastic in the grocery store. Blood sausage, made from coagulated pig’s blood and deceptively known as black pudding, is a breakfast standard in Britain. (Henry VIII is said to have loved it.)

The Scots famously favor haggis, a mix of sheep’s heart, liver, and lungs, simmered with oatmeal and onions in a sheep’s stomach; and the Norwegians are fans of lutefisk, dried cod soaked in lye that, properly prepared, has the squishy