Classify espresso symptoms into under-extraction, over-extraction, channeling, and recipe drift.
Sort each espresso symptom into the most likely diagnostic bucket. Under-extraction Over-extraction Channeling or uneven prep Recipe drift 17-second shot, sharp acidity, thin body Grassy finish with pale crema and fast flow Dry, bitter finish with slow 35-second flow Harsh roasted bitterness after a restricted shot Bottomless portafilter sprays from one side Cup tastes sour and bitter with sudden blonding Target is 36 g, actual yield is 47 g Basket dose is 1.2 g under the recipe
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