As some other comments have mentioned, South Asia has this concept of hot and cold foods that basically map to one of the sides of the four humors[0]. This classification seeks to define what the reaction of the body is upon ingesting the food/drink and I've always somewhat associated it with foods that can be inflammatory (hot) vs more neutral refreshing drinks (cold). Interesting to see it mentioned on HN

[0]https://commons.wikimedia.org/wiki/File:Humorism.svg#/media/...