How to make good coffee

1. Boiling from boil (100celsius) cause bitter coffee but should boil by coffee makers and control temperature about 90-95 celsius

2. Do not take boil coffee already boiling again because garbage coffee change taste from first time

3. You should use pure water

4. You should select level for grind coffee

5. Proportion of coffee are grind coffee 10 gram on water 180 millilitre

6. Boiling coffee keep 20 minute because taste can change if keep long time