1, slight yellowing can be eaten, if the color of broccoli becomes too yellow or too soft, then broccoli is likely to have rotted and spoiled, do not eat.

2. The reason why broccoli turns yellow is because of long time shelving, resulting in the loss of water in the body, and can not get sunlight irradiation, there is no way to produce chlorophyll, yellow broccoli is just a lot of nutrients in the body in the loss, but it is not bad, it can be eaten.

3, picking broccoli is an important indicator of firmness, the hand should be firm and full, pick up and feel heavy. Flower bulbs as a whole have a sense of elevation, the surface of the bumpy feeling to be less. The tenderness of broccoli is all in the buds to buy no bloom, buds bright green, not only taste better, but also easy to save.