Tibetan food is usually very mildly seasoned. According to the chef at my favorite Tibetan restaurant, it is the least spicy of the Himilayan cuisines. However, various hot sauces are served on the side. This chili sauce is one of the popular ones. It has two versions, one featuring yogurt, the other with tomato. This sauce does not keep for longer than a few days because the fresh cilentro loses flavor quickly.