How to Maintain a Filter Coffee Machine Filter Ariete Retro Style Green Coffee Machine: Premium Filter brewing is a quick process that involves pouring hot water on your grounds. The gravity pulls the water through your grounds into containers. This results in a balanced, flavourful cup. There are a few key things to be aware of when making use of filter coffee machines to ensure optimal flavor and responsible usage. The most important ones are: The brewing process A filter coffee maker lets you make coffee consistently. In order to maximize your experience with this type of coffee maker, it is essential to know how the process works and how you can adjust variables like the temperature of the water and the brewing time. This will allow you to make the perfect cup of filter-coffee every time. The brewing process involves the passing of hot water through the grounds in order to extract flavor compounds. The result is a delicious, Coffeee full-bodied beverage.