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.
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This machine is extremely consistent and it brews an excellent espresso or cup of coffee. It also looks like Darth Vader manifested as a coffee machine: it's sleek and black and is definitely what our coffee makers will look like when we're all living on the moon. If your kitchen aesthetic is Space Chic, this machine is for you. It takes the joy and skill out of brewing your own espresso, but it works extremely well and is great for making an almost cafe-quality cup of coffee at home in no time and with very little effort.
*SCAA Certified: A Specialty Coffee Association of America certification indicates the machine can heat water to a temperature between 195 and 205 degrees Fahrenheit and ensures that hot water will be in contact with coffee grounds for no less than four and no greater than eight minutes. It’s a solid confirmation of quality. But according to Joseph Rivera, a research coffee scientist at coffeechemistry.com, not every manufacturer chooses to submit their coffee makers for SCAA certification, and there are definitely great drip coffee makers out there without its stamp of approval. Six of the 10 coffee makers we tested are SCAA-certified — including all four of our top picks.
With the introduction of the electric drip coffee maker for the home in the early 1970s, the popularity of percolators plummeted, and so did the market for the self-contained ground coffee filters. In 1976, General Foods discontinued the manufacture of Max Pax, and by the end of the decade, even generic ground coffee filter rings were no longer available on U.S. supermarket shelves.
Our collections also include plenty of accessories to help you prepare and serve your delicious coffee. Serve coffee in style on one of our Williams Sonoma coffee tables. Browse a selection of consoles, side tables and rectangular tables that complement almost any space. If you opt for a capsule machine or a stovetop espresso maker, you may want to choose some accessories to enhance your drinks. Coffee accessories such as mills and scales can help improve flavor. If your maker of choice doesn’t include a frother, our collections offer a variety of options, from small handheld devices to slightly larger models that can froth a few cups of coffee at once.
This testing was designed to highlight the difference in how each machine extracted its coffee grounds. Remember, extraction is tied to water temperature, how long the grounds had to steep, and how evenly that water is distributed in the brew basket. (Depending on how the machine distributes the water and the shape of the basket, any particular ground may or may not receive the same amount of time in contact with water — thus any individual grind may be over-extracted, under-extracted, or just right.) Properly extracted grounds would have a balance of notes and aromas, from slight hints of acid to a pleasant amount of bitterness.
CR’s take: Though this Bialetti lacks typical drip-machine features such as programming and brew-strength control, it more than compensates with a Very Good rating in our brew performance test and a crisp 8-minute brew time. If you’re the type who sometimes prefers a morning shot of espresso to a cup of joe, this twofer—drip machine beside espresso maker—may be for you. It features a built-in milk frother, a permanent coffee filter, and auto-shutoff. CR does not yet have enough survey data on Bialetti machines to rate them on reliability and satisfaction, but when we do, we’ll add that info to our ratings.