Soak the cloth filter in hot water for 5 minutes if new. Attach it to the upper chamber and pull the chain tight. Add 300ml of hot water to the lower globe.
0:30Always store cloth filters in water in the fridge between uses. A dry cloth filter imparts stale flavors.
Light the burner and bring the water to a full boil. Insert the upper chamber — water will rise as vapor pressure builds.
1:30Once water has risen to the upper chamber, reduce heat to maintain a gentle bubble. Add 20g of medium-fine ground coffee and stir gently to submerge all grounds.
0:15Maintain a steady, low flame — too much heat causes turbulent boiling that makes extraction uneven.
Brew for 60 seconds. Stir gently once at the 30-second mark using a cross pattern.
1:00Remove the heat source. As the lower globe cools, vacuum will draw the brewed coffee down through the filter. This should take 30-60 seconds.
0:45