Purple potatoes and sweet potatoes are a kind of potato crops that people often eat, rich in starch, sugar and crude fiber, which can supplement the nutrition, but also can promote gastrointestinal digestion and peristalsis. There are many ways to eat them, such as directly boiled or steamed, but also can be made into purple potato porridge to use. Then boiled purple potatoes can be boiled as a whole?

Can the whole purple potatoes be boiled

The purple potatoes can be boiled directly in water, either cut into pieces or cooked whole, but the cooking time is longer. After boiling, the texture of purple potatoes will be wetter and softer, and the taste is not so sweet. The anthocyanins contained in purple potatoes are water-soluble natural pigments, which are beneficial to the human body. If boiled in water, certain nutrients will be lost. Therefore, although purple potatoes can be boiled directly in water, it is still recommended to use a better cooking method to retain the nutrients in the purple potatoes, and it should be noted that when the purple potatoes are boiled in water, the soil on them must be cleaned first.

Purple potatoes cooked with skin or peeled

It is recommended to cook with skin. The skin of purple potatoes can protect the nutrients in the flesh of purple potatoes, and will not be lost under the conditions of high temperature and boiling, and to a certain extent can ensure the taste and texture of purple potatoes. Although the skin of purple potatoes has certain nutrients, but we generally do not eat, so purple potatoes with skin cooking is possible. If you don't cook with the skin, the loss of its nutrients is certain, and the anthocyanins in the purple potatoes can also color the pot.

Boiled purple potato water why is sometimes blue

Because purple potatoes are rich in anthocyanins, this natural pigment is a water-soluble pigment, anthocyanins in the neutral environment is purple, encounter acid and alkali will change color, encountered alkali will become blue-green, encountered acid will become red. This is a normal phenomenon, can be eaten safely. Generally cooked purple potato porridge can easily turn blue or even green due to water or other reasons. Just add a little acidic liquid, such as white vinegar or lemon juice, can turn it back to purple.