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Kopi Joss

Traditional Yogyakarta charcoal coffee: sweet black coffee briefly infused with the aroma of a glowing lump of food-grade charcoal for a smoky, crackling finish.

Easy
10 min
1 servings
Kopi Joss

Ingredients

  • 15g (0.5 oz) coarsely ground dark-roast coffee
  • 240ml (1 cup) water
  • 10g (0.35 oz) granulated sugar
  • 20g (0.7 oz) food-grade lump charcoal, 1 piece about 4cm (1.5 in)

Method

  1. 1Bring 240ml (1 cup) water to a full boil at 100°C (212°F), then let it stand for 30 seconds (0.5 minutes).
  2. 2Put 10g (0.35 oz) sugar and 15g (0.5 oz) coarsely ground coffee into a thick heatproof glass or ceramic mug.
  3. 3Pour in the hot water, using all 240ml (1 cup), and stir for 10 seconds (0.17 minutes) until the sugar dissolves.
  4. 4Heat 20g (0.7 oz) food-grade lump charcoal over a gas flame or charcoal heat until it is visibly glowing on the surface, about 3 minutes (180 seconds). Do this outdoors or under strong ventilation.
  5. ••• Cook along hands-free with timers and step-by-step guidance in the app.