Exercise:

1. Prepare a porcelain cup and clean it.

2. Pour the boiled hot water into the porcelain cup until it is full.

3. When the cup is warm, draw out the water. Then, add the appropriate coffee powder.

4. Add just boiled hot water, which is about two-thirds of the cup.

5. Stir well with a spoon.

6. Pour a little rum into the coffee, about 1-2 ml.