Under a cultural-exchange program, Alan Abramsky and his family in Roanoke, Texas, were hosts to a rabbi from Russia at Christmas time. They decided to introduce him to a culinary treat that was probably not available in his country: They took him to their favorite Chinese restaurant.

Throughout the meal, the rabbi spoke excitedly about the wonders of North America in comparison to the bleak conditions in his homeland. When they had finished eating, the wa…