Each of the three rounds is brewed to taste completely different on purpose — bitter, then sweet, then barely-there — and together they're meant to symbolize the stages of life.
Attaya is Chinese gunpowder green tea brewed strong with mint and sugar, then poured back and forth between glass and teapot from a height to build up a foamy head. It's prepared slowly over three rounds at roadside stalls, markets, and street corners across Mali, often taking an hour or more to finish.