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7 Ways You’re Ruining Your Pour-Over Coffee

Proper pour-over water temperature, why you should wash your filters and more common pour-over coffee brewing mistakes.

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Pour-over coffee is more prone to human error than any other coffee brewing method. Whether you’re using a Kalita, Hario, Chemex or other brewer, there are myriad ways you could be compromising your cup of joe. Here, we outline seven to keep in mind. If you’re going to put in the effort to make a pour-over, make sure you aren’t self-sabotaging by making one of these mistakes.

Using water that’s too hot

We all love our hot coffee, but if you’re using water that’s too hot, then you’re burning your coffee grounds. We tend to associate burnt flavors with bad coffee, so save yourself the disservice of drinking crap coffee by using water heated between 195°F and 205°F, per the Specialty Coffee Association’s recommended pour-over protocols.

Grinding beans to the wrong size

Coffee grind size is not one size fits all. Pour-over coffee calls for a medium-coarse grind to ensure proper extraction. Grounds that are too fine will result in over-extracted, bitter coffee; grounds that are too coarse result in under-extracted, sour coffee. A medium-coarse grind will look like rough sand, and different beans might require some fine-tuning to get a coffee that achieves your desired taste.

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Not rinsing your filter

You aren’t imagining that papery taste in your coffee. Chemexes, Hario V60s and other drippers that use paper filters can impart an unpleasant flavor if they aren’t rinsed first. You might not notice the papery flavor if you’re brewing a dark roast bean, but the unsavory flavor will be prominent in light roast brews. Before you pour water to bean, place your filter in the dripper, pour over hot water and dump out the water that falls through. Plus, removing the papery taste with hot water is sort of a two-bird-one-stone situation, because…

Brewing into a cold container

Brewing hot coffee into a cold container will result in lukewarm coffee once you’re ready to serve. Bringing your carafe (and mug, if you’re slightly crazy) up to temperature will make your coffee stay hotter for longer.

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Forgetting to “bloom” your grounds

We’re all trying to get our cup of coffee as fast as possible, but you have to “bloom” your coffee grounds before going all in. Blooming requires pouring double the volume of water to coffee grounds to let the gases in the coffee release. Otherwise, if you just start drowning the beans, the carbon dioxide bubbles coming out of the coffee will prevent water from getting to the grounds to extract properly, which can throw off flavors dramatically.

Missing the bed of coffee while pouring

When you’re pouring water over the grounds, make sure you’re actually hitting the coffee bed. As the water level drops and coffee grounds stick to the sides of the filter, you may be tempted to aim your water kettle at those orphaned grounds on the edges of the filter. Don’t do that. Any water that hits the side of the filter — or brewer — may slide straight down the side of the brewer into the brewed coffee below, making for a severely watered down pot of joe.

Grinding beans too far in advance

Oxygen is coffee’s greatest enemy. Grind your beans right before you’re about to start brewing. It may be more convenient to grind your beans the night before, but in doing so you’re exposing the grinds to aggressive oxidation and off-gasing, which will — even in one evening — warp the flavor of the brewed coffee. Also, be sure to keep your whole beans in airtight containers — either the bag they came in, or capsules like these from Fellow.

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