Where MistoBox really shines is in its efficiently designed website and deep customization. If you want to, you can sign up for a scheduled delivery of curated espresso blends or single origin coffees and just let it ride—no input is necessary beyond the initial question of what kind of roast you like. But if you want to get a little more involved, you can rate each coffee you receive to refine future shipments or—if you want to take the future into your own hands—curate your own list of upcoming beans with a feature MistoBox calls the "Brew Queue." The number of choices is dizzying, and there are plenty of user reviews to guide your way thanks to a very active community.
It’s not that cone filters won’t make a great cup of coffee — the OXO On 9-Cup still ranked fifth out of 10 in our taste test. But flat bottoms generally allow for the grounds to be more evenly extracted and increase the coffee’s flavor. (It’s no coincidence our other three recommendations have flat-bottom brew baskets). You may have to do a little more tweaking to get this coffee maker’s brew to the best it can be, and that’s the other reason we like the 12-cupper more. This smaller version doesn’t let you tinker with water temperature.
Hamilton Beach 49980A is made for occasional drinkers and caffeine aficionados alike, with the system fixed with all of the latest programs while still being relatively affordable. This low maintenance coffee maker can brew a basic cup of coffee or a premium roast in minutes, with the stainless steel chassis providing a single serving or 12 cups for a larger party.
The De'Longhi comes with a durable, high-quality stainless steel boiler which would serve you well over time. Other notable features include a swivel jet frother for easy cappuccino and latte prep, a dual-function filter holder that gives you a choice between ground coffee and pods, and a self-priming function which we recommend for the absolute best results.
‡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.
For example, if your coffee tastes a bit salty or sour, the grounds are under-extracted, which can be remedied by a finer grind. But what if only some of your grounds are too coarse, and others are too fine – and maybe some are just right? Having uniform grind size throughout your brew basket makes it easier to isolate and adjust this variable in order to get the level of extraction you want. The only way to achieve that is with a burr grinder. Miller — as well as a handful of our other experts — recommends the Barazata Encore Coffee Grinder ($129).
A grouphead (or group head) is the receiver for the removable portafilter (or group handle). A typical consumer espresso machine normally has only one grouphead, while popular professional machines, such as those used at commercial coffee shops, can contain anywhere from one to seven. During the process of extracting a shot of espresso, hot water is forced through the grouphead under pressure. The grouphead contains many holes (the shower) that attempt to distribute the pressurised water evenly over the surface of the grinds in the portafilter basket and thereby achieve an even cross sectional flow.
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.