Brewery Brain — Coastline Craft Co. (Demo)

Investigate-a-defect

Brand B · LL-06

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1Pick what to investigate
2Gather data
3Findings + analysis
45-Why + actions

Investigation context

Brand B · LL-06

Panel score 6.952026-02-13

HIGH2 major defects with 2+ panelist agreement — Spicy (5 panelists), plus 1 more
HIGHMajor defect Sulfidic/ Eggy (H2S) recurring from prior panel (LL-05)
HIGHFermentation Health cluster firing on Spicy + Sulfidic/ Eggy (H2S)

Brand history · last 5 panels

Floor 6.0 · dashed

LL-02 · 2025-11-05 · 9.19LL-06 · 2026-02-13 · 6.95

Defect breakdown · top 8 by weighted variation

Spicy★580.0
Sulfidic/ Eggy (H2S)★525.0
Harsh Linger★312.0
Bitter Linger★39.0
Astringent Linger★36.0
Fluffy★0.52.5
Pear★0.52.5
Creamy★0.50.5

35 more attributes hidden · weighted variation tails off below the top 8.

Decisions so farBatchBrand B · LL-06PathSystematic

Working hypothesis

Tier 1Root Cause Playbook · Finish / Astringency · top match in this panel's defect mix (2 hits)

Husky / astringent / polyphenol cluster. Mash and sparge pH, grind coarseness, and ferulic-acid rest timing are the typical first stops before water chemistry.

Flagged on this panel:Spicy · 80Sulfidic/ Eggy (H2S) · 25

How these checks were chosen Systematic path: these checks come from the Finish / Astringency cluster — the cluster whose signature is strongest across this panel's defects.

Every path pulls checks from Reid's Root Cause Playbook. The path you pick decides which cluster's checks load:

Single defect — takes the highest-impact defect on the panel and loads the cluster that defect belongs to.
Cluster — loads the cluster that fired (two or more members crossed the threshold together).
Systematic — scores every cluster by how many of this panel's defects it matches, and loads the top one.

All three usually land on the same cluster when one defect family dominates. The Addresses tag on each check shows which flagged defect it targets, so you can skip checks aimed at defects that aren't on this panel.