Tom yum goong, Thailand
This Thai masterpiece teems with shrimp, mushrooms, tomatoes, lemongrass, galangal and kaffir lime leaves. Usually loaded with coconut milk and cream, the hearty soup unifies a host of favorite Thai tastes: sour, salty, spicy and sweet. Best of all is the price: cheap.
Penang assam laksa, Malaysia
Poached, flaked mackerel, tamarind, chili, mint, lemongrass, onion, pineapple … one of Malaysia's most popular dishes is an addictive spicy-sour fish broth with noodles (especially great when fused with ginger), that'll have your nose running before the spoon even hits your lips.