Ratio Eight Coffee Maker Review: A Near-Perfect Chemex-Style Pot

From there, you can either watch or walk away, though watching it brew is half the fun. With the press of a button, the machine begins gurgling water to the exact right temperature (200 degrees Fahrenheit, according to the Specialty Coffee Association of America), pulling it up through internal glass tubing systems.

Just as a manual pour over would, the Ratio first delivers a “Bloom” cycle. The steel showerhead spurts a few splashes of hot water to bloom the grounds, and as the hot water drips down, it simultaneously warms the carafe. From there, the bottom light at the base of the coffee maker pulses to indicate the switch from “Bloom” to “Brew.” Water begins raining down from the steel showerhead located above the grounds, spreading evenly over the coffee and approximating the spiraling pour of a practiced human hand. Ratio founder Mark Hellweg told me that there could have been a rotating head to truly achieve the concentric circle effect, but the company chose the showerhead design because it is less likely to need repairing. A good choice: I have been using the Ratio Eight for almost a year and have never encountered a single problem with the showerhead.

You should be using nice, artisanal, fresh-roasted coffee in the Ratio, not Folger’s. I mean, Folger’s will technically do the trick, but that would be like taking your new Ferrari for a test drive through crowded traffic: You’re not really getting the whole experience. While a properly brewed Chemex can accentuate flavors better than most brewing methods, this machine does it consistently. The beauty of this machine, I think, comes both from the handcrafted materials it is made with as well as the flavor profiles it exposes in your beans. The flavors listed on coffee bags that used to escape me (cherry, vanilla, tobacco) are suddenly vivid. Better yet, I know each and every morning will be filled with them.

The only complaint I have about the Ratio is that, because the carafe is glass and not heated from the bottom of the machine, it isn’t very insulating, which allows your coffee to cool if you don’t drink it. However, this is easily fixed. First of all, drink your coffee faster! Or, you can pour the remainder into an insulated travel mug for later. Or, you can spend $125 on an insulated carafe and dripper from Ratio. That extravagant accessory is not necessary, but if you want something that can keep your coffee hot for up to 90 minutes, it does the trick. Plus, it matches your machine.

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Brew Logic

Photograph: Ratio Eight

The Ratio Eight is one of two premier automated pour over coffee makers to choose from, the second being the $350 Chemex Ottomatic Coffee Maker 2.0. But of the two, the Ratio is simply made with more exacting care and better materials than the Ottomatic. The Ratio is handcrafted, with a frame of precision die-cast aluminum that’s capped with wood sidepieces (you get your pick of three different hardwoods for the siding to match whichever of the five colors you choose for the frame). Every machine is assembled by hand, and whether you opt for a hand-blown glass water tank or go with the standard BPA-Free plastic option, the coffee carafe is still made of hand blown glass.

All of this detail means the price of the Ratio is steep. It’s a whole $145 more than the Chemex Ottomatic, a machine that will brew an almost identical cup of coffee. And when you consider that you could assemble all the equipment necessary to brew this kind of coffee by hand for around $80, both machines seem expensive. But if you’re deciding between the various options and have the extra money to spend, the Ratio is elegant enough to be worth the investment. Plus, you get a sleek centerpiece for your kitchen countertop.

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