Purple sweet potato is a kind of herb in the genus Ipomoea of Convolvulaceae. Its pulp is purple to deep purple, so it is also called black sweet potato, purple sweet potato or purple sweet potato. Its taste is mostly sweet and generally does not have bitterness.
As for the reason why purple potato becomes bitter, I think it is because the skin of purple potato has deteriorated during storage, and a lot of harmful substances and impurities have been bred in the moldy and deteriorated places, which makes purple potato have a bitter taste when steamed. So I think we should check the skin carefully before eating purple potatoes. Under normal circumstances, the skin should be purple or lavender. If there are black spots or white mold on the skin, it means that the culture has gone moldy and deteriorated, so don't continue to eat it.
Cooking method of purple sweet potato
Purple potato is a very delicious food, which occupies a very important position in the minds of many chefs and has a very high appearance rate at the table. Everyone knows its related practices very well.
Among them, the popular methods of purple potato are purple potato millet porridge, purple potato crystal jiaozi, purple potato cake, purple potato bread, purple potato steamed bread, purple potato yam cake, purple potato sorbet, purple potato hand-grabbed cake, purple potato meatball, purple potato tremella soup, purple potato pumpkin cake, purple potato glutinous rice paste and so on. These methods have brought the sweetness and fragrance of purple potato into full play to a great extent.