Plain steamed buns, often sliced, toasted over charcoal or in an oven until crisp outside and soft inside. Barbecue stalls brush them with oil and sprinkle on cumin and chili; sweet versions are brushed with honey or sugar.
At barbecue stalls the buns are often sliced, brushed with oil and sprinkled with cumin and chili before toasting, so expect them spiced rather than plain.