Raw broccoli is a good source of the powerful cancer-fighting compound sulforaphane. But cooking destroys the enzyme (myrosinase) in broccoli that makes sulforaphane available to your body. The fix? Combine broccoli with mustard (yes, the condiment) or another raw cruciferous veggie, such as wasabi or arugula—the extra dose of myrosinase will help you absorb more sulforaphane, reveals a 2011 study published in the British Journal of Nutrition.