In-N-Out Secret Menu – In-N-Out Burger is a local American chain of fast-food restaurants with places primarily in California and the Southwest.
On October 22, 1948, In-N-Out Burger was founded by Harry Snyder and Esther Snyder. It is currently headquartered in Irvine, California.
It has developed outside Southern California into the rest of California and Utah, Nevada, Texas, Oregon, Colorado, and Arizona.