Question

what precaution should take to ensure that nutrients are not form food ​

Answer 1

​Keep skins on when possible.

Avoid continuous reheating of food.

Use a minimal amount of cooking liquid.

Choose steaming over boiling.

When you do boil, retain the cooking liquid for a future use (like soups and stocks)

Use the microwave.

Use a pressure cooker when possible.

Avoid using baking soda to retain color

Hope this helps...