Metric Coffee · Colombia Carlos Efrain Cortes

Shot 85, grind 25.5, 17.5g dose, 41.4g yield in 24 seconds. Balance dropped to 3 (Slightly Sour) but acidity isn't lingering — flow was constant and even across both spouts throughout. You went one click finer than the dialed-in grind 26, and the yield ran longer than your 35g target by 6.4g. The shot is still a clean pull, just slightly bright and slightly overlong on yield.

Time is Fast at 24s, same as your dialed-in shot at grind 26. Ratio is Normal at 2.37 — higher than your previous 2.2 because yield ran to 41.4g. Balance stepped back from 4 to 3, which tracks with the longer pull diluting body and letting brightness through. Notably, grinder retention shows 0g this shot — no adjusted dose correction needed. The 11g lag is on the high end; with a 35g target you'd want to stop the pump around 24g, which likely contributed to the yield overshoot.

Limoncello and blackberry are bright notes by design — the slight sourness at balance 3 with no linger is consistent with bean character, not a flaw. At 15 days post-roast this is solidly in peak window for a light washed bean. No freshness issues. The extraction is sound; the brightness you're tasting is the bean.

Your last two shots at grind 26 and 27 both landed balance 4 with clean finishes — the core recipe is solid. This shot confirmed that going finer doesn't add extraction speed on this bean; yield discipline is the remaining variable to nail.