Double Truffle Mushroom Swiss Burger with a Fried Egg. Grilled Chicken Avocado Club. Ingredients for dish (must be specific, no “secret ingredients”): Double Truffle Mushroom Swiss Burger with ...

iniBurger, a premier fast-casual burger concept in the Bay Area, has officially unveiled its newest menu addition, a gourmet Mushroom Swiss Burger which is now available as a permanent item joining ...

Whataburger’s popular mushroom Swiss burger, last offered in 2022, is back on the menu for a limited time until June 2, the restaurant said.