Sweet potato and purple potato porridge has a nice name: double potato health porridge. The double potato of double potato health porridge shows that porridge is the raw material of sweet potato and purple potato porridge, and health care highlights the role of porridge, which is pleasant to listen to and easy to remember. Sweet potato is also called sweet potato, sweet potato, sweet potato, sweet potato and so on. It belongs to Panicum. Purple potato is also called black potato, and its meat is purple to deep purple. Besides the nutrients of common sweet potato, it is also rich in selenium and anthocyanins. Porridge is a semi-liquid food cooked with rice flour and other foods.