Kopi joss

Kopi joss is a specialty coffee that originated in Yogyakarta. What makes this coffee unique is the addition of burning charcoal that is added directly in a cup of brewed coffee. The addition of charcoal is believed to have health benefits, and many also find that burning charcoal neutralizes acidity and provides a subtle caramel flavor to the brew.

The drink allegedly first appeared in the 1960s as an invention of a local street vendor. Nowadays, several coffee vendors, located mostly in tourist areas of Yogyakarta, prepare and sell this specialty. Interestingly, the name joss is believed to stem from the onomatopoeic sound that occurs when the burning charcoal is dropped in the glass.