A cup of java may boast a variety of well-documented health benefits, but curing a sore throat isn’t one of them. This goes doubly if you’re a singer: maintaining your natural instrument is as crucial as a guitarist periodically visiting a luthier.

South Korean singer LeeHi clearly had this in mind while filming her episode of Herbal Tea & White Sofas, GRAMMY.com’s series where musicians reveal what’s on their riders.