Peanut-Crusted Lamb Kebabs in the Style of Burkina Faso

Her name was Sala Ouedraogo and she drove a taxi in Paris. Our talk turned to barbecue, as it often does when I ride in a cab. The reason is simple: In most places taxi drivers come from somewhere else, sometimes from countries I have not visited, which have barbecue traditions I don’t know firsthand. Ms. Ouedraogo, for example, comes from the tiny West African nation of Burkina Faso, and while the grilled meat varies, it’s always seasoned with a unique ingredient ubiquitous in West Africa—