1. When the avocado loses its bright green color and begins to gradually turn black, it can be eaten if it feels soft when pinched with your hands.

2. It is difficult to judge by sight. Most people judge the maturity by pinching the fruit. It is very hard when pinched. If it cannot be pinched, it means it is not mature yet.

3. If it is very soft when pinched, it means that the pulp is rotten. If the inside is black, it cannot be eaten.

4. If it is moderately soft and hard and can be pinched and moved, it is the most suitable state for eating.

5. Avocado fruit is a fruit with high nutritional value, containing a variety of vitamins, rich fatty acids, protein and high levels of sodium, potassium, magnesium, calcium and other elements.

6. The nutritional value is comparable to that of butter, and it is even known as "forest butter".