If you’re shopping for coffee at the grocery store, “check the roast date, rather than the ‘best by’ date,” says Awan. With mass market roasters, the “best by” date can obfuscate the window in which coffee beans are at their best: about 4 days after roasting, when some, but not all, of the carbon dioxide has escaped from the beans. (Too much carbon dioxide captured within beans tends to create uneven extraction, as the gas escapes — this is what pre-infusing tries to counter. Conversely, too little carbon dioxide in the bean can lead to a loss of flavor.)
‡Pre-Infusing: Pre-infusing is a technique where the dry coffee grounds are initially saturated with hot water, allowing a “bloom” of carbon dioxide to escape. This 45-second(ish) process puts hot water into contact with more surface area around each ground throughout the brewing process, as it’s no longer competing with the escaping gas bubbles. It can improve the quality of the final product, since this more uniform contact creates a more even extraction. It’s a feature that six of the 10 pots we tested incorporated into their designs — as well as all four of our top picks.
The best coffeehouse in town is on your countertop with the Ninja Coffee Bar™ brewer. Ninja’s patent-pending brewing technology is designed to deliver better, richer- tasting coffee with variable richness levels that are never bitter. Only the Ninja Coffee Bar brewer has Thermal Flavor Extraction, which truly unlocks the full flavor potential of your coffee. Only Ninja® Auto-iQ™ One-Touch Intelligence allows you to CHOOSE A SIZE, CHOOSE A BREW. Auto-iQ™ One Touch Intelligence draws...

The point of getting a great machine is that it takes the fuss out of your coffee making — if you’re going to fiddle around so much, why not just get a Chemex? But our refrain throughout this entire review has been that a coffee maker is only one part of the good-cup equation. Some methodical experimentation could reveal a whole world of taste you never knew you could achieve.

The machine has advanced technology for making the best milk froth for indulgent flavor, and the froth texture can be adjusted with the twist of a knob, so it’s exactly the way you like it. Cleaning is easy — turn the milk knob to the “clean” position to automatically rinse the milk system. A descaling system alerts you when it’s time to clean, and the pluggable descaling pipe makes the process easy.
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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