What consequence results if the coffee grind is excessively fine for the brew device?
Answer
The brew chokes, leading to over-extraction and bitterness.
Grind size is a critical variable influencing flow rate and contact time. If the coffee particles are ground too finely, they pack too densely within the filter bed, creating excessive resistance to the downward flow of water. This resistance slows the passage of water significantly, increasing the time the water is in contact with the coffee past the ideal window. Prolonged contact leads to the over-extraction of less desirable, bitter-tasting compounds, often manifesting as a frustratingly slow or choked drip.
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