An electric drip coffee maker can also be referred to as a dripolator. It normally works by admitting water from a cold water reservoir into a flexible hose in the base of the reservoir leading directly to a thin metal tube or heating chamber (usually, of aluminum), where a heating element surrounding the metal tube heats the water. The heated water moves through the machine using the thermosiphon principle. Thermally-induced pressure and the siphoning effect move the heated water through an insulated rubber or vinyl riser hose, into a spray head, and onto the ground coffee, which is contained in a brew basket mounted below the spray head. The coffee passes through a filter and drips down into the carafe. A one-way valve in the tubing prevents water from siphoning back into the reservoir. A thermostat attached to the heating element turns off the heating element as needed to prevent overheating the water in the metal tube (overheating would produce only steam in the supply hose), then turns back on when the water cools below a certain threshold. For a standard 10-12 cup drip coffeemaker, using a more powerful thermostatically-controlled heating element (in terms of wattage produced), can heat increased amounts of water more quickly using larger heating chambers, generally producing higher average water temperatures at the spray head over the entire brewing cycle. This process can be further improved by changing the aluminum construction of most heating chambers to a metal with superior heat transfer qualities, such as copper.
“Strength, blend, decaf, cream, or sugar, there are many options when it comes to a cup of coffee. It seems every person has his or her own unique preferences to get them that perfect cup of joe. However, one factor that was often out of the home-coffee fan’s control was temperature. You either drank it at the temperature it came out of the coffee maker or you let it cool somewhat before sipping began. Cuisinart has aimed to turn that limitation on its head. This Cuisinart DCC-3650 adds a temperature control. It actually brews the coffee at one of three different user-defined temperatures. Impressive.”
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.
Help yourself to cafe-quality coffee every morning. Whether you're brewing coffee for two or making enough coffee for family and friends, the Hamilton Beach 12-Cup Programmable Coffee Maker is the perfect size and offers many features to fit your brewing needs. This full-size coffee maker looks great on the counter with a stainless steel design that fits right in with any kitchen.
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.
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.)
The Hamilton Beach 12 Cup BrewStation coffee maker offers convenient one-hand dispensing without a conventional glass carafe. There's no pouring or spills, and nothing fragile to break and replace. No matter how much you try, it’s impossible to get freshly brewed flavor from coffee that’s been sitting on a hot plate too long. That’s why ion was created, the only coffeemaker that keeps coffee tasting fresh for up to four hours. This best-selling coffee maker works just like a traditional...
The KitchenAid 12-Cup Programmable Coffee Maker, in onyx black, features a removable water tank that is easily accessible and includes printed water level indicators that make it easy to fill. The dishwasher-safe glass carafe features a dripless pouring spout and a comfortable soft-grip handle. The refined brew process includes a combination of the shower heads and a flat-bottom brew basket to evenly saturate the coffee grounds for uniform extraction and maximum flavor. The 1 to 4 cup brew...
Start your morning out right and perk up your day with a freshly brewed pot of coffee! This 12-Cup Retro Series Coffee Maker features an easy-to-read backlit LED display and a push-button control panel which allows for easy programming on the 24-hour clock and delay timer. The 2-hour automatic shut-off is built in for added safety while the pause-and-serve lets you pour a cup of coffee while in the middle of brewing.
While we love the all-inclusive features of the Breville, there’s one thing it can’t do on its own, at least not without a hefty repair bill. If you love dark roasts, any machine that features an internal grinder is off-limits. The oily shine characteristic of dark roasts builds up in any grinder — but while you can disassemble and clean standalone grinders, this is rarely an option for internal ones. The residual oil left in an internal grinder will, at best, give future shots a rancid flavor. At worst, the oil will clog the grinder. If you want to brew dark roasts on the Breville, plan on buying a separate grinder.
Once you start brewing, it makes a really, really good pot of coffee. Our taste test revealed the OXO On 12-Cup coffee was “dark and strong” and appealed to the more traditionalist coffee palates. The great flavor comes from the brewing process. The OXO machines have wide shower heads with multiple ports through which water streams, dispersing it evenly throughout the brew basket. Lots of other coffee makers spout water through just one hole, or through shower heads with a smaller radius, which can increase the chances of uneven extraction.
CR’s take: Our highest-rated drip brewer with an insulated, thermal carafe, the Ninja Bar Brewer CF085 has plenty to recommend it. CR’s testers find that it offers superb brew performance and is very easy to use. In our member surveys, Ninja drip coffee makers received an Excellent rating for owner satisfaction. (We don’t yet have enough data to judge reliability.) This model has a full suite of features, including an unusual over-ice brew mode for making iced coffee. Ninja claims its thermal carafe will keep coffee hot for 2 hours, and the machine comes with a milk frother and a standalone French-press brewer. These features come at a price, of course; the Ninja Bar Brewer is the second most expensive model on this list.