Bacon has been a staple of the American diet since the first European settlers, but until recently, it was consumed in a predictable, seasonal pattern. The bulk of sales came from home consumers, diners, and pancake houses, which fried it up along with eggs for breakfast.

A Jewish deli should specialize in, first and foremost, Yiddish foods, the foods of the Eastern European Ashkenazi Jews. So, if it's a place that specializes in pizza or chicken wings or diner food and then does a corned beef sandwich on the side, it's not a Jewish delicatessen.