Persicaria hydropiper, commonly known as water pepper, is a perennial herb native to Asia and Europe. It typically grows in wet, marshy areas and can reach heights of up to 1 meter. The plant features lance-shaped leaves and small, clustered flowers that bloom in summer. Water pepper is known for its pungent, spicy flavor, often used in culinary dishes and traditional medicine. The leaves contain compounds that can have a warming effect and are sometimes used to treat digestive issues. However, caution is advised, as excessive consumption can lead to irritation.