it's a bar, it's a tiny convenience store, it's a restaurant and snack shop, it's possibly a gas station! But on a hot day, they have soft serve and it is good and inexpensive.
Definitely has a side of the road feel to it, and full of locals on a hot day. Plus they have quite a bit of history and local color tacked up on the walls in the hallway that is the convenience store and snack counter - learn about the history of Aguanga (and where its name comes from)
A great place to stop when road tripping through the area - get some soft-serve, stretch the feet, and take in the feel of byway America.