4 Letter Word · Colombia Sidra de Luz

Shot 7 on Sidra de Luz, ristretto target hit — 21s, 27.2g yield, ratio 1.45. Flow was clean on the naked PF (border-to-front-to-back converging stream, no channeling). Balance slipped to 3 with a bright lingering finish, a step back from the clean balance 4 you got yesterday at the same grind.

Time is Fast and ratio is Ristretto — both expected for an intentional ristretto pull, target hit. The issue is taste: balance 3 with lingering brightness on a double-fermented malic-acid Sidra is the edge of acceptable. Yesterday's shot at grind 38 was balance 4 with slight linger; the shot before at grind 38 on the spouted PF was balance 4 clean. Going to 37 hasn't improved things — if anything it's introduced more lingering acidity, which points slightly under-extracted for this bean at this ratio.

Sidra de Luz is a double-fermented washed Sidra with crisp malic acidity by design — some brightness is always going to be present. The lime and cotton candy notes are there (your fruit and floral read on the best shot confirms it). At 26 days post-roast you're well inside the peak window. The linger today is extraction, not freshness or bean character — grind 38 was closer to dialed in for ristrettos on this bag.

Six clean shots with improving technique on the naked PF — the border-to-center converging flow is now consistent and the handle-angle WDT adaptation is holding. Grind direction is now clear: 38 is the sweet spot, 37 overshoots toward under-extraction on this bean.