Fortified · Wine of Australia · Australia
De Bortoli Old Boys 21 Years Barrel Aged Tawny
Scored from 183 calibrated Vivino reviewers, each re-centered on their own rating baseline before the bottle is ranked. Cohort: Fortified · Australia (43 wines).
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Tasting profile
A smooth, sweet tawny with a toffee color and notes of cherry, coffee, and woody, aged character that reviewers compare favorably to far pricier 20-year ports. Higher in alcohol and rich in flavor, it drinks well before or after dinner and pairs beautifully with desserts like creme brulee.
Synthesized from 183Vivino reviewers' tasting notes for this bottle.
What reviewers say
“Awesome port. Great price last I had it. Which was under $30. Hard to find a comparable 20yr old tawny in this price range. Taste more mature than big name 20yr tawnies.”
From a top-rated Vivino review for this bottle.
Summary
De Bortoli Old Boys 21 Years Barrel Aged Tawny is an Australian fortified wine from Wine of Australia.
The calibrated figure is built from 183 reviewers whose rating history varies enough to place their own average. A broader pool of 188 reviewers with two or more ratings feeds the raw-average track instead. The cohort it is ranked inside holds 43 Australian fortified wines.
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 De Bortoli Old Boys 21 Years Barrel Aged Tawny 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 Fortified · Australia (43 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 183.
Cohort: Fortified · Australia
