So, if you don’t have forty minutes to spare between chopping and cooking, or if you’re using frozen greens, just sprinkle the crucifers with some mustard powder before you eat them, and you’ll be all set. Daikon radishes, regular radishes, horseradish, and wasabi are all cruciferous vegetables and may have the same effect. All it appears to take is a pinch to revitalize sulforaphane production.