What is "water caltrop"?

Water caltrop is an aquatic plant that thrives in marshes and ponds. It is recognized for its unique appearance, with dark, horn-shaped nuts that resemble miniature bulls' heads. The nuts are encased in a tough, brown shell and have white flesh inside. Despite their formidable exterior, water caltrop nuts are edible and commonly used in Asian cuisine. They have a crisp texture and a mildly sweet and nutty flavor. With their striking appearance and delightful taste, water caltrops add a distinctive touch to various culinary dishes and are cherished by enthusiasts of diverse culinary traditions.