Pour-overs and other flow-through systems are more complex. Unlike full immersion methods where time is controlled, flow-through brew times depend on the grind size since the grounds control the flow rate.
The water-to-coffee ratio matters, too, in the brew time. Simply grinding finer to increase extraction invariably changes the brew time, as the water seeps more slowly through finer grounds. One can increase the water-to-coffee ratio by using less coffee, but as the mass of coffee is reduced, the brew time also decreases. Optimization of filter coffee brewing is multidimensional and tricky.
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Brewing a great cup of coffee depends on chemistry and physics
theconversation.com
10 ideas
·3.19K reads
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Sciency thingies behind The Perfect Brew!
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