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Each panellist considered how the coffee tasted and smelled, and every brew was made using the same coffee grounds to water ratio.
As the name suggests, grind and brew filter coffee machines grind coffee beans with the aim of delivering the freshest coffee possible. Live more sustainably - get our free Sustainability newsletter to make changes for you and the planet 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.
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. 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 recorded how speedily each machine brewed the minimum amount of coffee it can make. Temperature, filtration and drips
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. After the coffee was brewed, we cleaned the machine following the instructions and considered how easy that was.