If you’ve never heard of jiaozi, you’re in for a treat. Jiaozi are a type of Chinese dumpling that are enjoyed during Lunar New Year, although they can be found year-round in parts of northern China.

An American Jew in Italy will inevitably find cause to contemplate one of the food world’s great injustices: Why do ravioli get to be so delicious while kreplach are usually only endurable? Sometimes ...