Onion efficacy onion contains selenium can stimulate the body's immune response, thereby inhibiting the division and growth of cancer cells, but also reduce the toxicity of carcinogens. Phytocides are a special substance contained in onions, which have a strong bactericidal ability and can effectively ward off influenza viruses and prevent colds.
Onion how to peel buy back the onion first to go outside the thin once skin. After removing the skin, wash, cut off the top and bottom of the onion, and then cross knife cut into 4 petals, cut into 4 petals, the 4 parts of the onion in water, in the water, respectively, they peeled into a piece of a piece of water, and then cut into small slices, the knife should be a little sharper.
Onion preservation advice fresh onions do not put in the refrigerator, because it is very strong flavor, will make the refrigerator other ingredients stained with strong onion flavor, instead of into a bamboo basket or paper bag, placed in a cool air-conditioned place is preferred.
Because onions are afraid of stifling heat, if you use a bag, remember not to seal the mouth of the bag, and in order to maintain breathability, to avoid using plastic bags to store, not yet processed potatoes are also generally stored at room temperature.
Onions how to pick 1, look at the appearance. To carefully observe the appearance of the onion, to choose those head fat, shiny skin, and no damage, is a better quality onions.
2, look at the color. Common varieties of onions have yellow skin, white skin and purple skin, each with a different taste, white skin onions tender flesh, taste sweeter, higher moisture; yellow skin onions, taste slightly sweet with a slight spicy flavor, purple onions between the three most pungent stimulation.