Hamburger patties are round, flat pieces of ground meat, typically made from beef, that are cooked and served in a hamburger. They are usually seasoned with salt and pepper, and can be grilled, fried, or broiled. The standard size for a hamburger patty is about 4 to 6 ounces, but they can vary in thickness and diameter. In addition to beef, hamburger patties can also be made from other meats like turkey, chicken, or plant-based alternatives for those who prefer vegetarian or vegan options. They are often served on a bun with various toppings such as lettuce, tomato, cheese, and condiments like ketchup and mustard.