“My mom gave me a Gevalia 12-cup, programmable coffee maker a few years ago, and it’s gone with me through multiple Brooklyn apartments. It’s hard to find now, so if it ever breaks, she has a killer Cuisinart DCC-1200. I actually look forward to her coffee every time I’m home. It makes a mellow brew. If my Gevalia machine ever gives out on me, I’ll upgrade to that.” — Allie LaPorte, wine representative, Wilson Daniels
In recent years air-pump-driven espresso machines have emerged. These machines use compressed air to force the hot water through the coffee grounds. The hot water is typically added from a kettle or a thermo flask. The compressed air comes from either a hand-pump, N2 or CO2 cartridges or an electric compressor. One of the advantages of the air-pump-driven machines is that they are much smaller and lighter than electric machines. They are often handheld and portable. The first air-pump-driven machine was the AeroPress, which was invented by Alan Adler, an American inventor, and introduced in 2005. Handpresso Wild, invented by Nielsen Innovation SARL, a French innovation house, was introduced in 2007.
First, of all of the espresso machines we tested, the two Breville models are the only ones that contain the above-mentioned PID for extremely precise temperature control. This means that the machine consistently pulled a slightly-sweet, creamy shot of espresso. It had plenty of crema on top. Another reason this machine pulls such a consistently wonderful shot is that it maintains consistent pressure—where other machines made bitter, flat-tasting shots, the consistent pressure of the Breville machine meant the espresso was flavorful and delicious.
Most people who have this in their homes are happy with it thanks to how easy it is to use and how delicious the coffee comes out. One person said they didn’t know how they managed without it. Some people did have issues with it breaking sooner than they would have liked, but they majority of those who own it were satisfied with the quality of the product.
Some machines use a single boiler kept at steaming temperature, but water for brewing is passed through a heat exchanger, taking some heat from the steam without rising to the same temperature. Although the water for brewing remains at a lower range than that required for steaming milk, it is still too hot for proper coffee extraction without first cooling; thus this type of machine requires a cooling flush of 4–6 seconds prior to the first espresso pull. Once the machine is dialed into the proper temperature, as many shots can be pulled as required without refreshing. However, if the user leaves the machine idle again for some period, the flushing process will need to be repeated. The HX variety is found in many mid-range machines and many users install thermometers to assist them is dialing in correct temperatures. There is some controversy as to the temperature stability of the brewing water, since it is indirectly converted from steaming temperature to brewing temperature, rather than kept at a brewing temperature.