2-3 minutes.

Blanching broccoli for 2-3 minutes will make it cooked without losing vitamins. The broccoli should not be blanched for too long, otherwise it will affect the taste and lead to the loss of nutrients, which is not conducive to the body's nutritional replenishment.

If you blanch the broccoli for too long, it will cause the broccoli to turn yellow and become soft, which will affect the normal taste, and the vitamins in it will also be reduced, reducing the nutritional value of the food. In addition, blanch the broccoli for 2-3 minutes and immediately soak it in cold water to make it more crispy.