The principle of a vacuum brewer was to heat water in a lower vessel until expansion forced the contents through a narrow tube into an upper vessel containing ground coffee. When the lower vessel was empty and sufficient brewing time had elapsed, the heat was removed and the resulting vacuum would draw the brewed coffee back through a strainer into the lower chamber, from which it could be decanted. The Bauhaus interpretation of this device can be seen in Gerhard Marcks' Sintrax coffee maker of 1925.

At the beginning of the twentieth century, although some coffee makers tended to uniformity of design (particularly stovetop percolators), others displayed a wide variety of styling differences. In particular, the vacuum brewer, which required two fully separate chambers joined in an hourglass configuration, seemed to inspire industrial designers. Interest in new designs for the vacuum brewer revived during the American Arts & Crafts movement with the introduction of "Silex" brand coffee makers, based on models developed by Massachusetts housewives Ann Bridges and Mrs. Sutton. Their use of Pyrex solved the problem of fragility and breakability that had made this type of machine commercially unattractive. During the 1930s, simple, clean forms, increasingly of metal, attracted positive attention from industrial designers heavily influenced by the functionalist imperative of the Bauhaus and Streamline movements. It was at this time that Sunbeam's sleek Coffeemaster vacuum brewer appeared, styled by the famous industrial designer Alfonso Iannelli. The popularity of glass and Pyrex globes temporarily revived during the Second World War, since aluminum, chrome, and other metals used in traditional coffee makers became restricted in availability.
CR’s take: Like the model above, the Cuisinart Burr Grind & Brew takes whole coffee beans and grinds them fresh for each pot. It features programming, brew-strength control, a water filter, a permanent coffee filter, and auto-shutoff. This model earns a great rating for carafe handling. The stainless steel finish and glass carafe certainly elevate the experience of using it. Cuisinart brewers also received an Excellent rating for owner satisfaction. But the performance and finish come at a premium—this machine costs significantly more than the Black+Decker Mill & Brew.

Carafe style. Heavy coffee drinkers should look for a model with a thermal carafe. These coffee machines can keep your coffee warm for hours without having to sit on a burner, which can scald the liquid. Glass pots are not insulated and must sit on a heated burner to keep the coffee warm, so they’re an ideal choice for those who need only one or two cups a day. Some coffee drinkers insist that a glass carafe results in a better-tasting cup of joe. 

Our top pick is the OXO On 12-Cup Coffee Brewing System. It’s a large machine – both in footprint and in capacity — but it earned the second-highest scores in our taste test, and is sleek both to look at and to operate. Convenient features like programmable auto-brewing, a removable water reservoir that doubles as a kettle, and a spigot that stops the brew mid-stream if you remove the carafe make this machine feel high tech without being high maintenance. For those who want to be a little more hands-on with the brewing process, its single-button dial also lets you adjust the water’s brewing temperature, giving you more access to experiment with extraction and flavor.
This product is their smallest K-Mini™ K15 Single-Serve K-Cup Pod Coffee Maker, but it still delivers the delicious taste and reliable quality you expect. Its small size ensures the K-Mini™ coffee maker is perfect for kitchens with limited counter space, college dorms, and other small spaces. Its portable design makes it easy to transport anywhere you go, so your favorite beverages are never far away. Whether brewing coffee, tea, iced tea, or hot cocoa, the product makes single-cup brewing...

The KitchenAid® Pour Over Coffee Brewer combines the flavor and control of the manual pour over process with one-touch convenience. The Pour Over Coffee Brewer precisely heats and pulses the flow of water, steeping in the same manner as the manual pour over process, allowing the grounds to 'bloom'. The result is bright, clean and full flavored coffee without diluting due to over-soaking.

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.
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