Its rosy pink color is pure chemistry — baking soda turns the tea's natural compounds alkaline and deep red, and the milk stirred in afterward shifts it to the shade everyone recognizes.
Green gunpowder tea is boiled for a long stretch with baking soda until it turns deep red, then whisked vigorously with milk and a pinch of salt until it turns pale pink and frothy. Gilgit-Baltistan's tea stalls and homes serve it in large pots alongside bread through the cold mountain mornings.