Green chicken probably contains copper. Pigmentation may be caused by taking some medicine after the chicken is sick, or it may be caused by injury before the chicken is slaughtered. It may also be the excessive muscle movement caused by the struggle of wings and strong flapping, which leads to the obstruction or reduction of blood supply and local discoloration of chicken. In this case, don't eat green chicken at ordinary times.

The method of distinguishing whether chicken is fresh or not;

1, color: fresh chicken skin is shiny, and the color of chicken meat becomes dark for a long time.

2, look at the eyeball: the fresh eyeball is full, while the eyeball that has been put for a long time shrinks and the crystal is somewhat turbid.

3, smell: fresh chicken tastes normal, no odor, and there is some odor in the abdominal cavity for a long time.

4, look at viscosity: fresh chicken is not sticky, the appearance is slightly dry, and the appearance is dry and sticky after long-term storage.

5. Elasticity measurement: Fresh chicken is elastic and will recover after being pressed with fingers.

6, generally fresh chicken, after boiling, the soup is clear and transparent, the oil gathers on the surface and has a fragrance, while the chicken that has been put for a long time is slightly turbid after boiling, and the oil is scattered on the surface.

Fresh-keeping method of chicken:

1, you can cover it with plastic wrap, and then find some ice cubes to scatter around.

2. If there is no ice, you can also put it on the table and find something that can be completely covered (at least 2 days).

3. Take a fresh-keeping box, put the chicken in, soak it in yellow wine and sprinkle some salt. You can spend more time making drunken chickens.

4, go to the supermarket to buy drunk materials or bad brine, the same approach. Time can be put longer.