broccoli can still be eaten when the flower bones are open, but the taste is not as crisp as when they are not open. In fact, broccoli that has just turned yellow can be eaten. Before eating, it should be boiled in hot water, and the color can be restored to a little green.

If broccoli becomes too soft in Huang Dou, don't eat it any more. This is because it is not good for your health to have tranexamic acid A in it. For your health, throw it away.