Red pepper flakes
Red pepper flakes appears in 4 of the 123 recipes on Burgerman, roughly 3% of the library. In these builds it never shows up on its own, but pulling it out of a recipe is immediately noticeable. You will find it in Spicy Chicken Burger with Beer Cheese Sauce, Slow Cooker Marry Me Chicken Sandwiches and Bang Bang Burgers, among others. The highest-scoring recipe using it is Spicy Chicken Burger with Beer Cheese Sauce at 8.4 out of 10. It turns up most often alongside garlic, salt, black pepper.
