How to Make the Best-Flavoured Cup of Instant Coffee If you pay attention to the taste when brewing instant coffee, you cannot brew it casually. You also need to follow a certain brewing procedure: 1. Warm the cup first (in order not to reduce the taste of the coffee, soak the coffee cup in boiling water in advance). 2. Pour in the instant coffee powder and add 50 ml of boiling water (use 85 degrees Celsius boiling water). The appropriate temperature of coffee is 83 degrees Celsius at the moment of brewing, and 80 degrees Celsius when poured into the cup... 10 grams of coffee powder per 180 ml of water; No matter how much coffee is brewed, it is best to prepare it in the same proportion. Of course, you can also adjust the proportions according to your own preferences. 3. Add 50 ml of boiling water and stir with a coffee spoon