I brought a glass of milk and some beef jerky on a plate to class today and put them side by side. We discussed what we would be able to ingest if we had or didn't have teeth. The milk goes down easier and it is easier to digest (if you're not lactose intollerant). No teeth necessary. The jerky has more flavor, is more filling, and sustains you longer, but it would be a struggle to ingest without teeth.