Restaurant theme customizable menu options

Hello… I am looking to create a wordpress site with a customizable menu to order from. For example I will be having burgers on menu and would like for the client to be able to order different toppings such as onions lettuce ketchup etc… pretty much a create your own order type of setup. All wordpress reataurants themes that I have come across only offer a fixed menu. Does anyone know of a a theme that offers this functionality? greatly appreciated