The frothy 'meter coffee' pour — lifting the tumbler high above its cup to aerate the coffee — shares a curious ingredient trick with a drink from the other side of the world: both Louisiana's New Orleans-style coffee and South Indian filter coffee often blend in chicory for the same bittersweet depth.
Coffee decoction, brewed slowly through a two-chamber steel filter, is mixed with hot milk and sugar, then poured back and forth between a steel tumbler and its wide dabarah cup to cool it and build a foamy head. Roadside coffee stalls and darshinis across Tamil Nadu serve it this way every morning.