An early variant technique, called a balance siphon, was to have the two chambers arranged side-by-side on a sort of scale-like device, with a counterweight attached opposite the initial (or heating) chamber. Once the near-boiling water was forced from the heating chamber into the brewing one, the counterweight was activated, causing a spring-loaded snuffer to come down over the flame, thus turning "off" the heat, and allowing the cooled water to return to the original chamber. In this way, a sort of primitive 'automatic' brewing method was achieved.
On August 27, 1930, Inez H. Pierce of Chicago, Illinois filed patent for the first vacuum coffee maker that truly automated the vacuum brewing process, while eliminating the need for a stove top burner or liquid fuels.[1] An electrically heated stove was incorporated into the design of the vacuum brewer. Water was heated in a recessed well, which reduced wait times and forced the hottest water into the reaction chamber. Once the process was complete, a thermostat using bi-metallic expansion principles shut off heat to the unit at the appropriate time. Pierce's invention was the first truly "automatic" vacuum coffee brewer, and was later incorporated in the Farberware Coffee Robot.
We’re the largest online retailer of espresso machines and it’s no secret why. We love coffee. We love that first sip in the morning, the one that you’ve got to fight to get to your mouth because 8 hours of sleep seems like a pipe dream. We love that rush, when the caffeine kicks in and you know that you’ve got the day in the palm of your hand. We love the art – brewing, roasting, tasting – and the journey that each coffee drinker takes in search of their perfect joe. We’ve been sharing that love with the world since 1997 and we hope you’ll pull up a cup and join us in celebration of nature’s most perfect beverage, coffee!
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...

When you’re looking for an espresso maker, you have a few different options. Electric espresso makers are popular choices, and they make creating your own espresso drinks quick and easy. This type of machine feeds pressurized water through a series of tubes in the device, heats it up and then feeds it through compacted grounds. Most electric espresso machines include milk frothing wands, which use steam to create delicious foamy milk or cream that’s ideal for cappuccinos or lattes. Many machines are fully automatic, so there isn’t much of a learning curve involved. A few even include built-in coffee mills, offering fresh coffee with zero effort.


†Programmable Brew Time: Conventional wisdom frowns at grinding beans early and programming a pot to brew later. The aromatic compounds in coffee beans start to oxidize as quickly as 15 minutes after grinding, which causes coffee to start losing aroma and flavor. But Michael Ebert, senior consultant at Firedancer Coffee Consultants, LLC, assured us that, given the trade-offs for convenience, “grinding the night before will still make a great coffee — just not as great as it could be.” Seven of the 10 pots we tested are programmable, including three of our top picks (all but the Bonavita).
It’s obvious, but easy to forget: If you don’t clean out your coffee machine’s carafe after each use with soap and water, you’ll always end up tasting a little bit of yesterday’s now-bitter brew. Thermal carafes need to be hand-washed, but all the plastic components of our top picks — brew baskets, lids, etc. — are dishwasher-safe if you keep them on the top rack.

The machine itself is large, but not as monstrous as some of the other grinders I tested. It's also very bottom-heavy, which makes it feel more durable than other machines and means it won't rattle all over your counter while grinding. The heavy-duty translucent plastic collection cup generates less static cling than the glossy clear plastic cups I tested, and the chute that connects the burrs to the cup collects less debris than other models. Cleaning is simple: Just remove the top burr and use the included wire brush to remove residual grounds.


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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