When you were a kid, Fetter Irving used to tell you stories about all the food he would buy from street vendors in New York City - hot dogs, pizza, pastries, pretzels and knishes. Oh, the knishes! The knishes were his favorite. They were the perfect snack - compact, tasty, and filling. Truly an eat-on-the-go food. His favorite was the spinach knish (especially from the vendor near the Empire State Building), but any flavor would do in a pinch. Sometimes he ate them hot, but he usually ate them cold.