San Diego’s best smashburger lies hidden in the back of a bougie grocery store that sells a pack of grain-free tortillas for $20. Valley Farm Market’s kitchen counter grills up two wagyu beef patties and tops them with gooey melted cheese and caramelized onions. It all gets pressed together between pillowy King’s Hawaiian buns, which sop up some of the juices that’ll drip down your elbow like a ripe summer peach. With a side of crispy fries included in the $16 price, it’s one of the best deals in the neighborhood.