Butterbur, Bree Innkeeper's ability checks if you control a Food at the beginning of your end step. If you do, the ability won't trigger.

If the ability does trigger, but you control a Food when it tries to resolve, the ability will do nothing. No Food will be created.

Whatever you do, don't eat the delicious cards.

Food is an artifact type. Even though it appears on some creatures, it's never a creature type.

You can't sacrifice a Food to pay multiple costs. For example, you can't sacrifice a Food token to activate its own ability and also to activate Maraleaf Rider's ability.