In-N-Out Burger ingredients — What Quietly Changed on the Menu

In-N-Out Burger Ingredients Quietly Updated Across All Locations

In-N-Out Burger ingredients have undergone quiet but significant changes as the iconic Southern California-based fast-food chain rolls out new updates to its menu items across all 10 operating states.

Announcing the updates via social media, the company highlighted that it has continuously made meaningful changes to its ingredients over the years, with the past year being no exception. The most noticeable change affects the classic burger buns. In-N-Out confirmed that sesame flour is no longer used in its buns across all operating states, a crucial allergy-prevention move to protect customers sensitive to even trace amounts of sesame.

More Changes to Salt, Ketchup, and Beverages

In addition to the buns, the salt packets have also been upgraded. The chain replaced traditional iodized salt with sea salt. This follows previous recipe adjustments made last year, such as switching from high-fructose corn syrup to real sugar in both in-store ketchup packets and dispensers.

Furthermore, following the U.S. Food and Drug Administration’s (FDA) roadmap to phase out synthetic food dyes by the end of 2026, In-N-Out updated the recipes for its strawberry shakes and signature pink lemonade. The company stated that artificial colors were removed from these beverages as part of its ongoing commitment to providing top-quality ingredients.

Fresh Supply Chain and Ongoing Expansion

Known for emphasizing fresh ingredients, In-N-Out does not freeze its items—unlike many major fast-food competitors. Beef patties, produce, and dairy products are distributed through the company’s own supply chain to stores located within a single day’s drive of its distribution hubs. This rigorous standard is a key reason why the chain’s expansion happens at a slower pace compared to competitors.

Despite its deliberate growth model, In-N-Out continues to expand its footprint. New California locations are opening in Chino, Commerce, South El Monte, and Stockton, alongside out-of-state expansions in San Tan Valley, Arizona, and Hendersonville, Tennessee. Currently, In-N-Out operates over 430 restaurants across 10 states.