A hamburger bun is a type of bread specifically designed to hold a hamburger patty and its toppings. Typically round and soft, it is often made from wheat flour, water, yeast, and sugar. Hamburger buns can be found in various styles, including sesame seed, whole wheat, and gluten-free options. The bun serves as a convenient way to enjoy a hamburger, providing a sturdy yet tender structure that complements the flavors of the meat and condiments. It is usually sliced horizontally, allowing for easy assembly of ingredients like lettuce, tomato, and cheese, enhancing the overall eating experience.