The roasting cobs are usually mature, starchy field maize, the same crop ground for xima, so they're chewier and far less sweet than the sweet corn eaten in Europe or North America.
Corn cobs are grilled whole over charcoal braziers until lightly charred, then sold hot off the coals, sometimes rubbed with salt or a squeeze of lime. It's one of the most common quick bites at Nampula's Mercado Central and roadside stops.
Frango à Zambeziana (Piri-Piri Chicken)
Rissóis de Camarão (Shrimp Rissoles)