The best oil for cooking

• Sunflower and seed oils are high in polyunsaturated fats and degrade the easiest.
• Olive oil and rapeseed oil are high in monounsaturated fats and are better for heating as they produce fewer aldehydes. The highly processed ones have a higher smoke point and are safer to cook with than unrefined ones.

To reap health benefits, use extra virgin olive oil cold in things like salad dressings or mayonnaise.