Dear 100 Hour Board,
I already asked this question, but it never got answered, so I'll ask it again. Why do soup cans and most other food cans have "ribs" or divots on the sides? I mean if it is to make sure it comes out easier, I don't see how it would help. The food just fills them in anyway.
- Wonder Boy
Sorry about that - the reply must have gotten lost somewhere along the way. The ribbing on the cans in to reinforce their strength. Because of the ribbing, the can's center can't expand like it would without any ribbing, and so you can stack a lot more cans. That, and to make the cool patterns on the cranberry sauce at Thanksgiving.