Puffed grains are whole grains that have been expanded through a process of heating and pressure. This method causes the grains to puff up, creating a light and airy texture. Common examples of puffed grains include puffed rice, puffed wheat, and puffed corn. They are often used in breakfast cereals, snacks, and as toppings for various dishes. These grains retain most of their nutritional value, making them a popular choice for health-conscious consumers. Puffed grains are typically low in calories and can be a good source of fiber, vitamins, and minerals. They can be enjoyed on their own or mixed with other ingredients for added flavor and texture.