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Semi-automatic espresso machines are just that—semi-automatic. Some of the steps are automated, but many are not. This allows the user to put their personal stamp on the final product but without doing some of the tedious steps that are involved in making an espresso on the stove top. Here’s a look at some of the features that make a semi-automatic espresso machine such a great pickup for the ultimate espresso lover:
Our top pick is the OXO On 12-Cup Coffee Brewing System. It’s a large machine – both in footprint and in capacity — but it earned the second-highest scores in our taste test, and is sleek both to look at and to operate. Convenient features like programmable auto-brewing, a removable water reservoir that doubles as a kettle, and a spigot that stops the brew mid-stream if you remove the carafe make this machine feel high tech without being high maintenance. For those who want to be a little more hands-on with the brewing process, its single-button dial also lets you adjust the water’s brewing temperature, giving you more access to experiment with extraction and flavor.
“I actually didn’t start drinking coffee on a regular, daily basis until four or five years ago. I got hooked on the smoothness and low acidity of cold-brewed coffee, and for the longest time, my ritual each morning was to visit Gimme! near my house on Lorimer. Recently, though, I’ve started making cold brew myself at home with the OXO Good Grips Cold Brew Coffee Maker. It’s not a true drip-coffee machine, but I’ve been very happy with this piece of equipment — it lets me tinker with different beans and concentrations, and produces enough cold brew to last me two weeks at a time. It also stacks compactly for storage, which is an absolute requirement for my tiny New York apartment.” — Dennis Ngo, caterer at Lonestar Empire
The principle of a vacuum brewer was to heat water in a lower vessel until expansion forced the contents through a narrow tube into an upper vessel containing ground coffee. When the lower vessel was empty and sufficient brewing time had elapsed, the heat was removed and the resulting vacuum would draw the brewed coffee back through a strainer into the lower chamber, from which it could be decanted. The Bauhaus interpretation of this device can be seen in Gerhard Marcks' Sintrax coffee maker of 1925.
Semi-automatic machines are not quite as customizable as a manual machine, but they let you play with a lot: You can change the coarseness of the coffee you use, the amount of coffee you add, and how long you pull your shot. Expect a decent learning curve to figure things out, and know that you’ll also need some additional equipment, like a quality coffee grinder.
Our brew-performance tests measure the brew temperature and contact time (how long water stays within a sweet spot of 195° to 205° F for brewing). We measure concentration using a refractometer, a device that measures the amount of coffee dissolved in each brew. Our convenience tests look at how easy it is to set timers, fill the reservoir, clean the machine, and more. And for the first time, we’re incorporating predicted reliability and owner satisfaction ratings into the new Overall Score for each model. We determine these ratings for each drip coffee maker brand using survey data collected from thousands of CR members.