Buckwheat chips are a special food made from buckwheat flour in Yunnan. They are usually fried until they are brittle. Fried buckwheat slices are also called bitter buckwheat rice. Bitter buckwheat slices are food crops for both medicine and food. Speaking of puffed food, people will immediately think of snow cakes, potato chips, shrimp strips, chicken strips and other foods.

Domestic nutritionists believe that puffed food is also called extruded food, explosive food and light food. Puffed food is divided into fried puffed food and non-fried puffed food, such as potato chips, crisp corners, shrimp slices, crisp corn and so on.