Singapore is Asia's melting pot, populated by Chinese, Indonesians, Indians, and Malays—a culinary dream team that makes Singaporean street food the most diverse and celebrated on earth. And the safest: All sidewalk chefs here work in "hawker centers," little open-air venues where the government enforces its strict health codes. At the Old Airport Road Food Centre, you'll find Indian-style fish head curry bubbling away at one stand and Hainanese chicken rice—stuffed with scallions and ginger, poached, and served with sticky rice—at the next. The Matter Road Seafood Barbecue stall specializes in Singapore's celebrated chile crabs, which come slathered in a garlicky, fiery, prepare-to-get-messy paste. Toa Payoh Rojak deals only in rojak, an inspired salad of pineapple, cucumber, and other fruits and vegetables dressed in a bracing syrup made with tamarind and shrimp paste. Naturally, the plethora of options has inspired some serious connoisseurs, most famously K.F. Seetoh, whose Makansutra site is a well-respected guide to Singapore's best vendors.