Besides the topping, you can also replace the bread roll with whole meal brioches, pretzel rolls or others. Low carb rolls can also be used as an alternative.
The last thing you can change is the type of meat and its consistency. Either you continue to use minced meat (pork, beef,
chicken, turkey, ...) or you switch to the Pulled version. Here the meat is pulled and placed in small threads/chunks on the burger with the matching sauce. You can also find
vegetarian or even vegan variants of the hamburger on the menus. So, there is something for everyone.