1, look at the color. Fresh beef is even red and shiny, and its fat is white or milky yellow; However, stale beef is slightly darker in color and shiny in section, but the fat is dull.

2. Touch. The surface of fresh beef is slightly dry or moist, and the depression will recover immediately after being pressed with your fingers; However, the surface of stale beef is dry and sticky, and the recovery is slow or even impossible after being pressed with your fingers.

3. Smell the smell. Fresh beef has a faint smell of meat, and stale beef has an odor or even a bad smell. It is recommended not to buy it.