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Because of their bright appearance, red onions are often eaten fresh—in a salad, as an appetizer, or as a side dish. But it is also added to various hot dishes - frying, grilling or baking. It is not recommended to boil red onions - when cooked, they lose the rich purple color of the pulp. Red onions contain iron, manganese, copper, fluorine, vitamin C, K, group B, beta-carotene, selenium, useful essential amino acids - arginine, leucine, phenylalanine, tryptophan, phytoncides - have antimicrobial properties. Important! The main benefits of the vegetable are contained in the first layers (closer to the scales).