Graham crackers are a type of sweet, crisp cookie made from graham flour, which is a whole wheat flour. They were invented in the early 19th century by Sylvester Graham, a dietary reformer who believed in a healthy diet. Graham crackers are often used in desserts, such as s'mores, and can be enjoyed on their own or with toppings like peanut butter or chocolate. These crackers have a slightly sweet flavor and a crunchy texture, making them a popular snack for both children and adults. They are commonly found in grocery stores and are available in various flavors, including honey and cinnamon. Graham crackers are also a key ingredient in many recipes, such as crusts for cheesecakes and pies.