Which cooking method preserves nutrients best by cooking quickly at high heat?

• A. Boiling
• B. Steaming
• C. Frying
• D. Roasting

Answer: (B)

Steaming preserves nutrients best because it uses heat transfer from steam to cook the food without immersing it in water or oil. That means water‑soluble vitamins and minerals stay in the food rather than leaching into cooking liquid, and the food can cook quickly with minimal time for nutrient loss. The steam heats food efficiently while keeping exposure to harsh conditions lower than in other methods, helping to maintain vitamins, minerals, and sensitive textures.

Boiling causes many nutrients to escape into the cooking water, decreasing the nutrient content of the food. Frying and roasting involve high heat but also expose food to oil or longer dry‑heat cooking, which can lead to greater nutrient loss or changes in texture and flavor that aren’t as favorable for nutrient retention.