The main ingredient in peanut butter is peanuts. These legumes are roasted, ground, and often blended with a small amount of salt and sometimes sugar or oils to enhance flavor and texture. The result is a creamy or crunchy spread rich in protein and healthy fats, making it a popular choice for sandwiches and snacks. Peanut butter can be eaten on its own, used as a dip, or incorporated into various recipes, from smoothies to desserts. Its versatility and nutritional value contribute to its widespread popularity across different cultures.