How can I miss the secret menu network red burger IN-N-OUT when traveling to California. This trip to San Diego came to this branch in Mira Mesa Blvd. Don't look at the menu selections in the store's signboards, but in fact, IN-N-OUT's burgers, chips and even drinks have secret menus. The so-called secret menu does not have an official list, many of which are circulated on the Internet and can be found online. The more popular ones are DOUBLE MEAT.