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Assyrtiko: Island cultivation and the production of dry and sweet styles
From Santorini’s basket-shaped training, move on to its dry whites and Vinsanto. Compare the grape’s natural acidity and the steps of post-harvest drying and fermentation.
Questions for this course
How are both dry and sweet styles made from the same white variety on a dry island?
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To explanation task notes ↓Assyrtiko / Learning from grape varieties
Synonym/Label: Assyrtiko
Update date: 2026-09-23
Grape varieties that retain acidity even in heat
Assyrtiko is known as a white grape that retains acidity even in hot and dry conditions. It originates from Santorini and has spread to other regions in Greece. In addition to being used for dry whites, it is also made into sweet wines from dried grapes. Do not automatically assume a wine with acidity is dry; it is necessary to check how much sugar remains in its production.
Basket-like training to protect bunches from strong winds
Santorini's kouloura is a training method in which vines are woven like a basket, with bunches grown inside the coil. It developed to protect grapes from the island’s strong winds. While Albariño’s high pergolas ensure ventilation, this system protects bunches at low height. Read about the relationship between vineyard form and the weather conditions they address in each region.
Vin Santo: Concentration and Fermentation
GAIA’s Vinsanto uses concentrated juice obtained from dried Assyrtiko grapes, which is slowly fermented in old barrels. The producer explains that fermentation is naturally halted by the combined influence of remaining sugars and created alcohol, leaving residual sweetness. This method differs from Port, which stops fermentation through fortification. Despite both being sweet, do not assume they share the same production method as you review the materials.
What to align and what to compare.
Grapes
- Conditions to standardize
- Assyrtiko that retains acidity.
- Conditions for comparison.
- Islands and Other Regions: Dry and Sweet Styles
- Additional points to confirm
- Read acidity and residual sugar separately.
Vineyard
- Conditions to standardize
- Cultivation that protects the fruit
- Conditions for comparison.
- Basket-trained vines adapted for wind
- Additional points to confirm
- Position of the bunch and weather conditions
Winemaking
- Conditions to standardize
- Fermentation consumes sugar
- Conditions for comparison.
- Fruit drying and arresting fermentation
- Additional points to confirm
- Distinguish concentration from fortification
Order of reading and key points to consider in each article
0 / 4 articles completed
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- 1↗
Greece
Key varieties: from four entry points to regional varieties
Read about the use of Greek white grape varieties.
- 2↗
Greece
Santorini: Training system for wind and origin
Read about vineyards on volcanic islands and how they adapt to the wind.
- 3↗
Greece
Vin Santo: From Drying after Harvest to Aging
Check for sweetness from dried fruit.
- 4↗
Portugal
Port fermentation: At what point is fortification carried out?
Compare the different methods of stopping fermentation.
READ · HYPOTHESIZE · RECONSIDER
Assyrtiko Document Study: Island Viticulture and Making Dry & Sweet Styles
In an imaginary process chart, distinguish drying from fermentation and differentiate acidity from sweetness/dryness.
This is a hypothetical example for learning. The variety is Assyrtiko in both cases, and no fortification is assumed.
| Item | A | B |
|---|---|---|
| Processing of ingredients. | Pressing after harvest | Drying and then pressing the fruit after harvest |
| After fermentation. | Finished as dry | Fermentation finishes with residual sugar. |
| Tasting record | Perceive acidity. | Perceive both sweetness and acidity |
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Read the explanation for each question
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At what stage does B's raw material concentrate?
During the drying stage where fruit loses water, the material becomes concentrated. This is different in both subject and sequence from post-fermentation maturation and bottling.
According to the materials, which reason explains why B is sweet?
The table assumes fermentation finishes with residual sugar and no fortification. Not all sweet wines are made using the same method as Port.
What is the record of B’s sweetness and acidity?
Sweetness and acidity are different characteristics. Even in a sweet style of Assyrtiko, acidity can still be perceived. Understanding the variety’s acidity and the sugar remaining after fermentation separately explains this without contradiction.
Basis and sources for the exercise
Practice exercises in comparison
In an imaginary process chart, distinguish drying from fermentation and differentiate acidity from sweetness/dryness.
Read examples of organizing comparisons
| Conditions for Comparison | Dry Assyrtiko | GAIA’s Vinsanto |
|---|---|---|
| Raw material | Fruit for making a dry style. | Concentrated fruit from drying |
| Fermentation | Consume sugar to achieve a dry style. | Fermenting concentrated juice, resulting in residual sugar |
| Information discerned | Acidity · Residual sugar · Vessels | Drying, fermentation arrest, and barrel aging |
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
State the process that changes sweetness and dryness between A and B, and explain why it is not contradictory that both have acidity.
Check after writing
- Did you indicate drying as a step before fermentation?
- Did you explain the process of leaving sugar?
- Did you distinguish acidity and sweetness?
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