Red · Lodi · United States
Gnarly Head Grateful Dead Limited Edition Old Vine Zin
Scored from 86 calibrated Vivino reviewers, each re-centered on their own rating baseline before the bottle is ranked. Cohort: Red · United States (1,156 wines).
Find this wine: view on Vivino · compare prices on Wine-Searcher
What reviewers say
“Abrindo o #Quartou com um 🍷 Zin “Edição Limitada” dessa vinícola que não surpreende de tão bom e de excelente QPR!!!”
From a top-rated Vivino review for this bottle.
Summary
Gnarly Head Grateful Dead Limited Edition Old Vine Zin is an American red from Lodi. The grape is Zinfandel.
The calibrated figure is built from 86 reviewers whose rating history varies enough to place their own average. A broader pool of 86 reviewers with two or more ratings feeds the raw-average track instead. 1,155 other reds from the United States form the cohort it is ranked inside.
How the score was built
We compare the reviewers of this bottle against every other wine those same people reviewed. Each review is scored relative to the reviewer's own baseline — four stars from someone who hands out fives means something very different from four stars from someone who rarely goes above three. Every reviewer then counts the same, so the result is a calibrated consensus rather than a star average.
- Global percentile
- Where Gnarly Head Grateful Dead Limited Edition Old Vine Zin lands against every wine we rank.
- In-cohort percentile
- The same comparison narrowed to its cohort — wines of the same type from the same country. A Chilean red is judged against Chilean reds, not against Champagne. Ranked against Red · United States (1,156 wines).
- AI-adjusted percentile
- The same reviewer-normalized score, corrected for how much confidence the sample supports: thin samples are pulled toward the corpus average. Each wine keeps the share n / (n + 53) of its measured distance from the average, where n is its calibrated-reviewer count, and the result is ranked on the same scale as the global percentile.53 is the median sample size across everything we rank. Here n is 86.
