The acidity of the water and overcooking of green vegetables causes them to lose their color. So this does not happen, follow these tips and learn how to cook vegetables so you never go back to presenting them discolored.
Step by Step of: How to cook green vegetables and keep them green
Preferably, cook your vegetables in a pewter container, because this material maintains an ideal state for our vegetables, or a glass pot. Do not add more water than necessary.
Do not put the vegetables that you are going to cook until the water is boiling, once you submerge them, lower the heat and cover. Do not leave them in the water any longer than necessary, since the nutrients would be lost.
Add a pinch of salt to the water. It can also be a splash of vinegar or a few drops of lemon.
Ready, you will see how your vegetables will keep their color better now. Use the excess water to cook a soup or a cream, as some of the nutrients will still be present there.