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In-N-Out Burger is a popular American fast-food chain renowned for its simple menu, high-quality ingredients, and distinctive Double-Double burger. This California-based institution has been serving customers since 1948 when Harry Snyder opened the first location.

The core of In-N-Out's success lies in their commitment to using only the freshest ingredients and never frozen beef patties. The menu is straightforward with a focus on burgers, fries, and drinks. Their signature item, the Double-Double, features two beef patties topped with American cheese, lettuce, tomato, and a secret spread, all served on a toasted bun.

One of the defining characteristics of In-N-Out Burger is their "Not So Secret Menu," which includes customization options like protein-style burgers (swapped for grilled portobello mushrooms) and animal-style fries. This menu also features the iconic "4x4" – four patties and four slices of cheese, a favorite among enthusiasts.

In-N-Out's dedication to quality has earned them numerous accolades and a loyal following in California and beyond. Despite their widespread presence, In-N-Out remains fiercely regional, limiting expansion to select areas to maintain control over the brand.