Rock Chives® is the Koppert Cress brand name for an edible plant. Rock Chives is characterized by the black cap on the cress, which is the seed husk. The husk gives the product a playful appearance. Rock Chives has a fine garlic flavor, which goes well with herb butter, oil, or tzatziki. Additionally, the cress also pairs well with warm vegetable, fish, and meat dishes. Briefly heat the Rock Chives, and the seed husk becomes crispy. For a little extra texture.