In-N-Out Just Made Several Changes To Its Ingredients — Here's What's Different

In-N-Out Burger this week announced some notable changes to the ingredients behind its famously simple menu.

The burger chain revealed the changes in a social media post highlighting what it called its "ongoing commitment" to customers.

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"We've made meaningful changes to our ingredients over the years and continue to do so today," the company said.

Among the newest changes: Sesame flour is no longer an ingredient in In-N-Out's buns in any of the 10 states in which it has locations, the company said.

That reverses a change made by In-N-Out in 2024, after federal law designated sesame as a major food allergen. Because sesame can cause cross-contamination, the company added it to its buns in some locations as a precaution against potential lawsuits and recalls, Fox Business reported.

In-N-Out also announced that it swapped out iodized salt in its individual salt packets for sea salt this year.

The company did not explain why it made that switch. An essential nutrient needed by the body, iodine has been added to table salt in the U.S. since the 1920s. Iodine deficiency can cause, among other things, goiter, according to researchers at Boston Medical Center.

While sea salt is sometimes marketed as a less-processed alternative, the American Heart Association says it generally contains about the same amount of sodium as table salt and is not necessarily healthier. Sea salt also typically contains little or no iodine.

Fans who reach for ketchup may already have noticed another change. In-N-Out said its ketchup — both in packets and dispensers — has been made with "real sugar instead of high-fructose corn syrup" since 2025.

That year the company also made a slew of other changes to its ingredients, including eliminating synthetic dyes in pickles and drinks.

In-N-Out framed the updates as part of a broader effort to keep revisiting its ingredients while maintaining the food customers expect from the chain.