Aged coffee from the 1K brand is prepared to be concentrated and ready for direct use without the need for machines. The basic serving and preparation method relies on a fixed ratio of 50 ml of aged coffee per cup, and you can customize it to your taste as follows: Cold preparation options Concentrated Iced Coffee: Add 50 ml coffee with 150 ml ice. Balanced Cold Coffee: Mix 50 ml coffee with 50 ml ice and 50 ml cold water. Light Cold Coffee: Mix 50 ml coffee with 50 ml ice and 100 ml cold water. Hot preparation option Deep Hot Coffee: Add 50 ml coffee with 100 ml boiling water.