Acorn Shells are a great resource to have as they’re an ingredient in multiple recipes.
How to Get Acorn Shell in Grounded
To get Acorn Shells you’ll need to bring a lvl 1 or above hammer (namely, the Pebblet Hammer) to break Acorns. While you can technically find them anywhere on the ground, the best location to find Acorns is to the north of the Yard, where the Oak Tree is (if you don’t know where that is, we marked it on the map for you), among its roots. Be careful as there may be spiders on the area.
Tip: When you crack open an Acorn, you can also find Acorn Bits among the dropped Shells. These Bits are better source of food than mushrooms.