Sweet potato is an important food crop, which is rich in starch and sugar. It is rich in dietary fiber, which helps intestinal motility and digestion. It also contains beta-carotene, vitamin C, vitamin E, potassium, calcium and other vitamins and minerals. Sweet potato cooking methods are diverse, can be roasted, steamed, boiled, fried, can also be used to make sugar, starch or alcohol and other processed products.

Rice, commonly known as rice, is an annual aquatic herb in the Poaceae family (there are already perennial rice varieties). The stem is upright, 0.5-1.5 meters high, and varies depending on the variety. Leaf sheaths are hairless and loose; Leaf tongue lanceolate; Leaves linear lanceolate, about 1 cm wide, hairless, rough. Large and sparse inflorescence with rough edges; The spikelet contains one mature flower; Yingmin is extremely small, leaving only a crescent shaped mark at the tip of the spikelet stalk, cone-shaped; On both sides of the fertile flower, the lemma is thick in texture, with 5 veins and ridges on the midrib. The surface has small milky protrusions in a grid shape, thick in paper, and densely covered with fine hairs; The palea and lemma are homogeneous, with three veins and a pointed tip without a beak; The stamens and anthers are 2-3 millimeters long.