How long do you recommend boiling broccoli to keep it dark green?

Broccoli is a cruciferous vegetable that is naturally green. Boiling it will not change the color of the vegetable, but prolonged cooking can cause it to become a dull or olive green. To maintain its vibrant green color, it is recommended to steam broccoli rather than boiling it. Steaming preserves the color as well as the nutrients in the vegetable. If you prefer to boil it, you can add baking soda to the water, which will help maintain its color. However, it is important to note that the broccoli should still be cooked quickly, as overcooking will result in a loss of color and flavor.