Red · Uco Valley · Argentina
Bodega Piedra Negra Reserve Malbec Mendoza
Scored from 2,293 calibrated Vivino reviewers, each re-centered on their own rating baseline before the bottle is ranked. Cohort: Red · Argentina (482 wines).
Find this wine: view on Vivino · compare prices on Wine-Searcher
What reviewers say
“Twenty one year old Malbec . A gift to A and M on their engagement, opened for their fifteenth anniversary. Very smooth! Plum, blackberry, leather, cassis, cola, cocoa, coffee, and oak.”
From a top-rated Vivino review for this bottle.
Summary
From Uco Valley in Argentina, Bodega Piedra Negra Reserve Malbec Mendoza is a red.
481 other reds from Argentina form the cohort it is ranked inside. The calibrated figure is built from 2,293 reviewers whose rating history varies enough to place their own average. A broader pool of 2,392 reviewers with two or more ratings feeds the raw-average track instead.
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 Bodega Piedra Negra Reserve Malbec Mendoza 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 · Argentina (482 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 2,293.
