IN-N-OUT BURGER is a privately held company, making it difficult to determine its exact revenue, but estimated revenue is reported to be over $1 billion annually. In particular, the revenue in 2020 was approximately $1.05 billion. Beyond California, it has begun expanding to other states such as Arizona, Nevada, Utah, and Texas. Today, IN-N-OUT operates over 350 locations nationwide.

IN-N-OUT is also known for providing good salaries and benefits to its employees. This has played a crucial role in maintaining the company's brand image and quality.

IN-N-OUT BURGER was founded in 1948 in Baldwin Park, California by Harry Snyder and his wife Esther Snyder.

It started as a simple drive-in fast food restaurant, adopting the slogan "Quality You Can Taste" and quickly gained customer love with fresh ingredients and fast service.

Harry Snyder believed that fast food chains should prioritize fresh ingredients and quality. They prepared all ingredients, including meat, potatoes, and bread, fresh daily, and insisted on using only fresh produce without frozen ingredients.

From the beginning, IN-N-OUT focused on "simplicity," and the menu was very straightforward. They did not offer any additional complex items beyond burgers, fries, and drinks. This strategy left a deep impression on people, and IN-N-OUT gradually expanded its fan base.

The popular menu items at IN-N-OUT BURGER are loved by many.

Double-Double Burger
One of IN-N-OUT's signature items, the Double-Double Burger features two fresh beef patties, two slices of cheese, lettuce, tomato, and special sauce. It is the most popular item among burger lovers, providing satisfaction with its rich flavor and generous portion.

Animal Style Burger
Animal Style is one of IN-N-OUT's "secret menu" items, a version of the basic burger with grilled onions and special sauce added. This style enhances the flavor and is very popular among IN-N-OUT fans. Animal Style can also be applied to fries!

French Fries
IN-N-OUT's fries are known for their fresh and crispy taste compared to other fast food chains. The fries are prepared fresh daily before frying, making them even fresher and tastier. Additionally, Animal Style French Fries can be topped with grilled onions and sauce, making them very popular among fans.

Shakes
IN-N-OUT's shakes are famous for their rich flavor and smooth texture. They offer various flavors such as chocolate, vanilla, and strawberry, making them a great dessert to enjoy with burgers. In particular, the shakes are made with fresh ingredients, resulting in a much deeper and richer taste.

In addition, there are popular items like 3x3 (three patties and cheese) and Protein Style (a burger wrapped in lettuce instead of a bun), but the above four items are considered the representative popular menu items of IN-N-OUT!