Watercress is an often overlooked leafy green that packs a powerful nutrient punch.
Its small, round leaves and edible stems have a peppery, slightly spicy flavor.
Watercress is part of the Brassicaceae family of vegetables, which also includes kale, Brussels sprouts and cabbage (1Trusted Source).
Once considered a weed, it was first cultivated in the UK in the early 1800s but is now grown in watery beds throughout the world.