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Château Léoville Barton: Vine Planting Ratios and Blending Ratios
A Second Growth château of the 1855 classification in Saint-Julien. Managed by the Barton family, they cultivate mainly Cabernet Sauvignon, along with Merlot and Cabernet Franc.
Match the two sets of ratios listed in the 2021 materials to the vineyard and the finished wine.
Questions for this course
If 77% of the vineyard is Cabernet, does the wine blend also contain 77% Cabernet?
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To explanation task notes ↓Château Léoville Barton / Learn from Producers
France / Bordeaux / Saint-Julien
Aliases/Labels: Château Léoville Barton / シャトー・レオヴィル・バルトン
Updated: 2026-10-06
Three varieties planted in the vineyard.
In the vineyard section of the 2021 materials, the figures are Cabernet Sauvignon 77%, Merlot 20%, and Cabernet Franc 3%. These numbers represent the planting composition of varieties. They do not show the outcome of yields or selection.
The three grape varieties that go into the bottle.
The same blending section in the document gives 84%, 11%, 5%. This is different from the proportions of the vineyard plots. When reading ratios, distinguish between those referring to vine cultivation stages and those at the blending of base wines.
From fermentation to barrel aging
Fermentation is carried out in temperature-controlled wooden vats for each plot, then the wine is transferred to barrels. The 60% new barrel figure in the materials refers to maturation. Even if the varietal ratios are listed side by side, they cannot simply be totaled with the same denominator.
What to align and what to compare.
Vineyard
- Conditions to standardize
- Three varieties
- Conditions for comparison.
- 77・20・3%
- Additional points to confirm
- Vineyard composition
Wine
- Conditions to standardize
- The same three varieties.
- Conditions for comparison.
- 84・11・5%
- Additional points to confirm
- blend of the finished product
Barrel
- Conditions to standardize
- 2021 materials
- Conditions for comparison.
- 60% new barrels
- Additional points to confirm
- Separate the denominator for the grape variety
Order of reading and key points to consider in each article
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READ · HYPOTHESIZE · RECONSIDER
Château Léoville Barton Source Interpretation: Vine Planting Ratios and Blending Ratios
Check and compare the region, raw materials, and process from the materials, and explain what can be learned from the comparison.
Comparative tables are based on the source’s target year and the explanation at the time of verification. Descriptions without year specifications are not treated as specifications common to all harvest years or shipped portions.
| Comparison items | Vineyard (2021 data) | Blend (2021) |
|---|---|---|
| Cabernet Sauvignon | 77% | 84% |
| Merlot | 20% | 11% |
| Cabernet Franc | 3% | 5% |
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Read the explanation for each question
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What is the difference between 77% and 84%?
77% is the portion of Cabernet Sauvignon planted in the vineyard, while 84% is its proportion in the finished wine in 2021. These do not necessarily match due to yields or selection choices, so read the figures for cultivation and blending separately.
What is the 2021 Merlot blend?
The Merlot blend for 2021 is 11%. The 20% refers to the vineyard’s varietal composition, and 60% new oak refers to the proportion of new barrels used for aging. Even if percentages are similar, check which part of the source they refer to, as the subject can differ.
Which information refers to 60% new barrels?
Fermentation is carried out in temperature-controlled wooden vats for each plot, then the wine is transferred to barrels. The 60% new barrel figure in the materials refers to maturation. Even if the varietal ratios are listed side by side, they cannot simply be totaled with the same denominator.
Basis and sources for the exercise
Practice exercises in comparison
Check and compare the region, raw materials, and process from the materials, and explain what can be learned from the comparison.
Read examples of organizing comparisons
| Conditions for Comparison | Vineyard (2021 data) | Blend (2021) |
|---|---|---|
| Cabernet Sauvignon | 77% | 84% |
| Merlot | 20% | 11% |
| Cabernet Franc | 3% | 5% |
Sources of materials used for comparison are listed in the text and exercises.
Explain in your own words
Explain what the 77% and 84% Cabernet and 60% new oak are percentages of, respectively.
Check after writing
- Did you separate planting from blending?
- Was it clearly stated as 2021 materials?
- Make sure you are not adding new barrel ratio to grape variety ratio.
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