In-N-Out Burger's Santee location on Mission Gorge Road sits east of Carlton Hills Boulevard near the Highway 52 and Highway 125 interchange, serving the same four-item menu the chain has run since its 1948 founding in Baldwin Park. Every patty arrives fresh from In-N-Out's proprietary Southern California commissary rather than frozen, and the potatoes are hand-cut into fries in-house each shift — a vertical supply chain that also fuels the e-bike touring crowd picking up from Pedego Electric Bikes Santee at Town Center before riding the Mission Gorge corridor. San Diego County Health Department inspections have returned a 96-out-of-100 score for the kitchen. The off-menu 4x4 stacks four beef patties with four slices of American cheese into a single bun, one of several customization codes that set the chain's ordering culture apart from other quick-service restaurants in Santee, including the build-your-own taco assemblies at Sayulitas Mexican Food on Woodside Avenue. Milkshakes blend real ice cream in three flavors and can be ordered Neapolitan-style as an unlisted combination of all three.