Peach

Shaking Forest trees is the only route, so you never really farm peaches on purpose. You collect a few while chopping wood, forget about them, and find them in a chest months later.

As food it is bottom tier. Fine for the first hour of a world when you have no kitchen, and worth throwing away the moment you can cook anything. Do not eat one before a boss and think you have prepared.

The reason to keep a stack is Shimmer. Dropping a peach in turns it into Ambrosia, which is a top shelf meal, and peaches are one of the least effort inputs on that whole conversion list. If you have Shimmer access, shake every tree you pass.