What physical force drives water through coffee grounds in standard filter brewing?

Answer

Gravity

The fundamental process defining filter coffee, known as percolation brewing, relies entirely on the force of gravity to draw the hot water slowly through the coffee grounds held within the filter. This passive extraction method stands in contrast to pressurized brewing techniques like espresso, ensuring a gentle extraction of the coffee’s soluble compounds.

What physical force drives water through coffee grounds in standard filter brewing?
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