The main reason is that the materials and processing techniques used in sweet potato jelly and pea jelly are different. Pea jelly is made from pea starch and other materials. It is processed and pressed to have a certain elasticity and strength. Sweet potato jelly is made from sweet potato starch and other materials. It is generally poured into a steamer to steam the starch slurry, let it cool and then cut into small pieces. It has a soft and delicate taste. Sweet potato jelly is a traditional cold dish made from sweet potato starch, water, salt and other raw materials. It is widely loved for its soft and delicate taste and unique fragrance.