– Microwaving: Research shows that microwaving broccoli can increase its sulforaphane levels. Compared to steaming, rapid heating in the microwave limits nutrient loss due to minimal water contact and shorter cook times.
– Light sautéing or stir-frying with olive oil: Sautéing or stir-frying broccoli in a bit of olive oil is best for enhancing flavor and for improving the potential absorption of certain compounds, such as glucosinolates and isothiocyanates. Quick, moderate-heat sautéing also preserves texture and flavor while avoiding prolonged exposure to heat.
While steaming and microwaving maximize nutrient retention, roasting or sautéing broccoli may encourage higher intake because these methods produce a better taste.
The Worst Cooking Methods
“Cooking vegetables for extended periods is not ideal for preserving their nutritional value,” said Smith.6 “For broccoli, maintaining its bright green color is a good indicator that nutrients have been better retained.”
Boiling: Boiling broccoli leaches significant water-soluble vitamins and compounds (such as glucosinolates) into the cooking water. Most research suggests that boiling broccoli leads to the greatest loss of its nutrients, so this cooking method is best to skip.
