Senegalese expat Mamadou Diakhate greets, cooks, serves, and cleans in this skinny five-table restaurant in Columbia City with the biggest smile and warmest welcome in four counties. Marinated lamb in a creamy peanut sauce (lamb mafe) and tilapia stuffed with garlic and herbs in a tomato-based vegetable stew over broken jasmine rice—the Senegalese national dish, thiebou djeun—are musts in here, as are rarely seen drinks like bissap juice and bouye. Things may take a while, and in this enchanted place you won’t care.