Appetizing. You think you know what it means: tasty, enticing you to eat. But in the early 20th century, among the Eastern European Jewish immigrants living on New York City's Lower East Side, appetizing was more commonly used as a noun, referring to the delicious array of foods -- smoked fish, cream cheeses, cold salads -- that were traditionally eaten with bagels. Back then, there were upward of 30 "appetizing" stores in the neighborhood. Today, only one remains: Russ & Daughters.