Another Superfood to Add to Your Daily Diet Although broccoli sprouts contain the highest amounts of isothiocyanates, other cruciferous vegetables also contain this anti-cancer compound, including watercress. This often-overlooked, leafy green is a close cousin to mustard greens, cabbage, and arugula. When phytochemicals like sulforaphane are excluded from the equation, watercress may actually be the most nutrient-dense vegetable out there—scoring higher on nutrient density scores than both broccoli and sunflower sprouts. Based on 17 nutrients, including potassium, fiber, protein, calcium, iron, thiamin, riboflavin,…