Buyer's Guide to Coffee Makers
When choosing a coffee maker, the main consideration should be:
How do you like your coffee?
When brewing there’s a trade off between the clarity of flavours in the coffee and the amount of body it has. The greater the clarity of flavours the lighter the body and vice versa.
So the first question to ask yourself is: do you prefer your coffee bright and light; full-bodied; or somewhere in between?
Features in Coffee Makers Which Affect Clarity and Body
There are three main features in coffee makers which dictate the level of clarity and body the coffee has:
The most defining factor is the type of filtration the coffee maker uses to separate the coffee solution from the ground coffee. The finer the filter the more clarity the coffee will have.
Whilst the size of pores does vary from brand to brand, the fineness of the filter is governed by the material it’s made from. Generally, paper filters have the finest pores, followed by cloth and then metal.
Coffee makers that apply pressure during the brewing process usually have more body than those that don’t. For example, espresso machines and stove-top espresso makers will have a fuller body and less clarity than a cafetiere (french press).
3. Brewing Style
Broadly speaking, coffee makers can be divided into two camps: full immersion and percolation brewers (not to be confused with coffee percolators). With a full immersion brewer, the full amount of water is in contact with the ground coffee for the majority, if not the entire duration, of the brew. The cafetiere (or french press) is the most common full immersion brewer. With a percolation brewer, water is passed through a bed of ground coffee, usually quite slowly. A good example of this is a pour-over (drip filter) brewer.
Typically full immersion brewing lends itself to fuller bodied brews than percolation, although this isn’t always the case. Full immersion brewing is also much simpler than percolation, so it’s easier to get consistent results.