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Tannat: Uruguay’s Regions and Large Barrel Aging
This course covers Tannat, which was brought from southwestern France to Uruguay. You will compare the southern regions with the Atlantic areas, and trace the winemaking process from fermentation to maturation using technical data from producers.
Questions for this course
How do you compare Tannat, known for deep color and rich tannin, by terroir and winemaking?
Before you start reading, briefly jot down your thoughts. You will rephrase them at the end.
To applied practice using the material ↓
To explanation task notes ↓Tannat / Learn by grape variety
Update date: 2026-09-23
From France to Uruguay
Tannat originates from southwest France and was introduced to Uruguay in the late 19th century. INAVI’s official information introduces Pascual Harriague’s role in bringing the grape via Concordia, Argentina. This black grape, known for intense color and abundant tannin, has become Uruguay’s emblematic grape through immigration and cultivation history. By differentiating current leading regions from the grape’s origin, Tannat’s journey is revealed.
Comparing the land of the South and the Atlantic side
The South, including Canelones, is influenced by the Río de la Plata, with vineyards spreading across flat and gently undulating terrain. To the east, Maldonado and Rocha are strongly influenced by the Atlantic Ocean and are also characterized by hills and geological diversity. When comparing Tannat, first check the position of rivers, the sea, and the vineyards on the map. Layering vintage and winemaking factors on top of that helps clarify both regional and winemaking differences.
Reading Garzón's large barrels by winemaking steps
Garzón Tannat Reserva 2023 uses 100% Tannat and is fermented in 150 hL concrete tanks. Aging is done in 50 hL non-toasted large French oak barrels for 6–12 months. Not toasting the insides of the barrels is also a feature of their winemaking. This moves beyond the general description of a "red matured in oak," enabling you to read the material, size, and period involved in both fermentation and aging.
What to align and what to compare.
History
- Conditions to standardize
- The Tannat variety
- Conditions for comparison.
- Origins in southwestern France and establishment in Uruguay
- Additional points to confirm
- Distinguish current main production regions from place of origin.
Land
- Conditions to standardize
- Vineyards of Uruguay
- Conditions for comparison.
- Río de la Plata area and Atlantic coast
- Additional points to confirm
- Check the locations of rivers, seas, and topography on the map.
Winemaking
- Conditions to standardize
- 100% Tannat red
- Conditions for comparison.
- Concrete fermentation and ageing in large untoasted casks.
- Additional points to confirm
- Read the volume and duration for each stage of the process.
Order of reading and key points to consider in each article
0 / 4 articles completed
Next article →Progress is recorded as the completion of reading articles. This does not include completion of explanatory assignments.
- 1↗
Uruguay
Tannat and Albariño
Compare the characteristics of Tannat with other major varieties.
- 2↗
Uruguay
Canelones and the South
Learn about the southern geography and viticultural background.
- 3↗
Uruguay
Maldonado and Rocha
Study the hills and vineyards of the Atlantic side.
- 4↗
Uruguay
Garzón: Tannat and large barrels
Check winemaking process by vintage using Garzón's technical information.
READ · HYPOTHESIZE · RECONSIDER
Tannat Document Comprehension: Uruguay’s Regions and Large-Barrel Aging
Using information from Garzón Tannat Reserva 2023, summarise the fermentation and aging conditions.
This summary of Bodega Garzón’s Tannat Reserva 2023 is based on the product document. Do not assume the same specifications for other vintages or series.
1hL is 100L. Toasting refers to charring the interior surface of the barrel.
| Item | Fermentation | Aging |
|---|---|---|
| Vessel | Concrete tank | Untoasted large-format French oak barrel |
| Volume | 150hL | 50hL |
| Period | No information provided on this product page | 6–12 months |
| Grapes | 100% Tannat wine | 100% Tannat wine |
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Read the explanation for each question
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What vessel is used for fermentation?
The source indicates 150hL concrete tanks for fermentation and 50hL French oak vats for aging. Even for the same wine, the vessel changes depending on the stage. The 6–12 months refers to maturation, not fermenting time, and should not be switched.
A large barrel of 50hL used for aging is how many liters?
Since 1hL is 100L, 50hL is 5,000L. The 150hL fermentation tank is 15,000L. Rather than comparing just the numbers, make sure to read the units and stage in the process to distinguish between tanks and large barrels, and to explain the winemaking flow.
What barrel characteristics can be verified from this document?
The maturation vessel is listed as a large, untoasted French oak barrel. Just knowing that a wooden barrel was used does not mean a strong toasty aroma is certain. Since the proportion of new barrels is not mentioned on this product page, I will explain without guessing the number of times the barrel was used.
Practice exercises in comparison
Using information from Garzón Tannat Reserva 2023, summarise the fermentation and aging conditions.
Read examples of organizing comparisons
| Conditions for Comparison | The South including Canelones | Maldonado and Rocha |
|---|---|---|
| Relationship with water bodies | Influence of the Río de la Plata | The influence of the Atlantic |
| How to interpret a location. | Plains, gentle undulations, and soil | Differences in hills, elevation, and geology |
| Criteria for comparing Tannat | Check vintage, blend, extraction, and maturation. | Check vintage, blend, extraction, and maturation. |
This is an organized study tool based on the designated articles for this course. You can check specific facts and sources in each article.
Explain in your own words
Indicate the capacity of fermentation and aging vessels, and explain why it cannot be conclusively stated from the materials alone that 'barrel aging means strong toasty aroma.'
Check after writing
- Did you not confuse fermentation and aging vessels?
- Have you checked the conversion between hL and L?
- Did you reflect the non-toasted specification in your explanation?
Save response to explanation task
Compare your initial thoughts with how they have changed after reading the article.
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