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We recorded how speedily each machine brewed the minimum amount of coffee it can make. Temperature, filtration and drips After the coffee was brewed, we cleaned the machine following the instructions and considered how easy that was.
Most grind and brew machines can also use coffee that has been pre-ground, for those times when you're out of beans or in a hurry. Live more sustainably - get our free Sustainability newsletter to make changes for you and the planet It can vary slightly from machine to machine but here are the basic steps for how to make filter coffee in a filter coffee machine:Glass jugs - Glass jugs are most common, but some filter coffee machines come with an insulated jug to help keep your coffee warm for longer without using an energy-hungry hotplate. A couple of the machines we tested have insulated jugs rather than glass ones.
Automatic switch-off - This means the filter coffee machine will switch itself off after a set period of time. Machines with insulated jugs usually switch off after a maximum of five minutes, and machines with non-insulated (ie glass) jugs usually switch off after 40 minutes, once the keep warm cycle finishes. All the filter coffee machines we tested have this feature.Each panellist considered how the coffee tasted and smelled, and every brew was made using the same coffee grounds to water ratio. When the coffee machine is switched on, it grinds the coffee beans (either in a separate compartment or directly in the filter itself) and then immediately brews the coffee. We selected popular filter coffee machines from leading UK retailers to be put through our tough tests. We bought every product we tested. Taste and aroma
Showerhead - Both standard and pour-over models may use a showerhead. As the name suggests, this means that a fine spray of water is sprinkled over the coffee grounds rather than a single stream. The idea is that this will wet the coffee more evenly to ensure a consistent brew. Some worked better than others in our tests though, so a showerhead is no guarantee of better coffee.
We poured the coffee through an extra filter to see if any bitter coffee grounds had slipped through the machine's filter into the brew, and noted if the machine dripped when removing the jug to pour the coffee. Energy efficiency We assessed how straightforward it was to get the machine ready for brewing and if there were any confusing controls. Place a filter paper (or a reusable mesh filter if your coffee machine comes with one) inside the filter basket compartment.