Sichuan pepper
Sichuan pepper is one of the few spices which are important for Tibetan and Bhutanese cookery of the Himalayas. This is because few spices can be grown there. One Himalayan specialty is the momo, a dumpling stuffed with vegetables, cottage cheese or minced yak meat, beef or pork and flavoured with Sichuan pepper, garlic, ginger and onion. The noodles are steamed and served dry, together with a fiery sauce.  Tibetans believe it can sanitize meat that may not be so fresh. In reality it may only serve to mask foul flavors.