1. Don't use hard water in cooking
Water can be divided into soft and hard. If the concentration of calcium and magnesium ions in water (calculated by Cao) is greater than 160%, it belongs to hard water; if it is less than 80%, it belongs to soft water. Cooking some dishes with hard water will make some dishes' sliced wood ', which is hard to swallow. It is said that a hospitable chef cooked pea dishes for the pea loving guests. After serving, the peas in the dishes were hard skinned and could not be chewed and chewed. They became 'rubber peas'. It turns out that this is caused by hard water: peas and other vegetables are rich in organic acids, which can ionize with calcium and magnesium in hard water to form hard organic acid salts that are insoluble in water, greatly reducing the flavor of adult vegetables.
2. Don't use cold water for stew
It is better to use hot water to stew meat and cold water to boil bone soup. It turns out that the delicious meat is rich in glutamic acid, inosine and other 'refreshing substances'. If hot water is used to stew meat, the protein on the surface of the meat can be quickly solidified, and the fresh substances in the meat are not easy to penetrate into the soup, making the stewed meat particularly delicious. And boil bone soup, is to drink soup, with cold water, small fire slow boil, can prolong the solidification time of protein, make the fresh material in bone and meat fully infiltrate into the soup, soup is delicious.
3. Don't cook with cold tap water
More and more residents in China drink chlorinated tap water. If they cook with this kind of cold water directly, the chlorine in the water will destroy the vitamin B1 and other nutrients in grains. According to the determination of relevant departments, the loss of vitamin B1 is directly proportional to the cooking time and temperature, and the loss is about 30% in general. If you cook with boiled tap water, you can greatly reduce the loss of vitamin B1 and other nutrients. Because the chlorine in the boiled tap water has evaporated with the steam.