Soy sauce, also known as shoyu, is a common condiment used in sushi dishes. It is made from fermented soybeans and wheat, and is usually dark brown in color. Ponzu, another popular sauce for sushi, is a citrus-based sauce made from rice vinegar, soy sauce, and citrus juice. Wasabi, a spicy green paste, is also often served with sushi. Finally, gari, or pickled ginger, is a sweet and sour accompaniment to sushi that helps to cleanse the palate.