I've never worked in food service exactly but my high school job was in a cinema and I loved and still do love popcorn. We ate so much of that stuff you wouldn't believe it. We couldn't use the popcorn boxes though because the containers missing provided the sales numbers with which the money had to square. We used the boxes paper cups came in. For drinks, we drew ourselves sodas in cups and when we finished we drew some more and sold them. I'm embarrassed to admit that I was part of such a scheme. But...............