The primary ingredient in peanut butter is peanuts. Peanut butter is made by grinding roasted peanuts into a creamy or crunchy paste, which can be enjoyed in various ways, including as a spread on bread, a dip for fruits and vegetables, or an ingredient in recipes such as cookies and smoothies. Some brands also add ingredients like salt and sugar to enhance flavor. Peanut butter is popular for its rich taste and nutrient profile, offering protein, healthy fats, and essential vitamins and minerals.