How do you prevent broccoli vegetable becoming yellowish in colour?

1. Harvest broccoli at the right time. Broccoli is best harvested when the florets are still tight and green. If you wait too long to harvest, the florets will start to open up and turn yellow.

2. Store broccoli properly. Broccoli should be stored in the refrigerator in a plastic bag. Make sure the bag is not too tightly sealed, as this can trap moisture and cause the broccoli to turn yellow.

3. Keep broccoli away from other produce. Some fruits and vegetables, such as apples and bananas, can release ethylene gas, which can cause broccoli to turn yellow. Keep broccoli away from these types of produce to prevent it from yellowing prematurely.

4. Cook broccoli quickly. Overcooking broccoli can cause it to turn yellow. To prevent this, cook broccoli for just a few minutes until it is tender-crisp.

5. Use broccoli in a stir-fry. Broccoli can be used in stir-fries to help maintain its green color. Stir-fries are quick cooking, and the sauce can help to preserve the broccoli's color.

6. Add an acid to the cooking water. Adding a little lemon juice or vinegar to the cooking water can help to preserve the broccoli's green color.

7. Serve broccoli immediately after cooking. Broccoli should be served immediately after cooking to prevent it from turning yellow.