Match visible and sensory espresso symptoms to the most likely extraction problem.
Sort the cards by the extraction problem they most strongly signal. Under-extracted Over-extracted Uneven or channeling Pale fast stream under Sharp and thin cup Slow dark drips over Bitter dry finish Side jet from basket uneven Sour and bitter together Extraction diagnosis Built a three-bucket extraction read If the shot is sour and bitter at once, suspect unevenness before recipe math.
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