France: Alsace Flashcards
Describe the climate of Alsace.
- Continental climate
- Long growing season
- Cold winters, warm, sunny summers
How much rain does Alsace receive annually?
About 580mm
What are the average annual sunlight hours of Alsace?
Around 1800
What are the most important climactic influences in Alsace?
The Vosges Wind (rainshadow).
High latitude (long growing season).
The Föhn Wind (warm and drying).
Describe the best sites (topography) of Alsace.
The best vineyards are at 200-250m altitudes in the foothills of the Vosges (can reach up to 400m).
South, south-east or south west facing aspects.
Alsace is often said to have a mosaic of soils.
What are the three broad categories?
- Plains: richer alluvial clay and gravel
- Lower slopes: limestone base
- Higher slopes: Schist, granite, and volcanic sediment.
Name some soil types that can be found across Alsace.
Granite, limestone, schist, clay, gravel, chalk, loess, and a local pink sandstone called grés de Vosges.
What is grés de Vosges?
A local pink sandstone found in Alsace
What are the noble grape varieties of Alsace?
Riesling
Pinot Gris
Gewurtztraminer
Muscat
What is the most planted grape variety in Alsace?
Pinot Blanc followed by Riesling
How much of Alsace’s total production is white wine?
90%
Which muscat varieties are planted in Alsace?
Muscat Blanc à Petits Grains, Muscat Rosé à Petits Grains, or Muscat Ottonel
How much of France’s total AOP still white wine production does Alsace account for?
Around 20%
What is Pinot Blanc otherwise known as in Alsace?
Klevner
What is Chasselas otherwise known as in Alsace?
Gutedel
What are the eight white grape varieties permitted in Alsace?
- Riesling
- Pinot Gris
- Gewurtztraminer
- Muscat (Blanc, Rosé and Ottonel).
- Sylvaner
- Chasselas
- Pinot Blanc
- Auxerrois
Outline the viticultural characteristics of Riesling?
- Late-budding (Avoids Spring frosts) mid-late ripening.
- Needs to be planted in the best sites to fully ripen and yield economically
- Winter hardy thanks to hardness of its wood
- Resistant to downey
- Only slightly susceptible to powdery and botrytis
Outline the viticultural characteristics of Gewurtztraminer.
- Early budding (prone to Spring frosts) and early ripening (avoids autumn rains).
- Accumulates sugar rapidly.
- Vigorous, but only moderately productive due to coulure.
- It can suffer from chlorosis and from desiccation of the stems.
- In Alsace it is vulnerable to powdery
mildew, grape vine moth and grey rot.
Outline the viticultural characteristics of Pinot Gris.
- Early budding (prone to Spring frosts) early ripening (avoids Autumn rain).
- Moderate yields
- Prone to botrytis and downey mildew
- Can accumulate high sugar levels
How are vines trained in Alsace?
- Single or double guyot as required by AOC regulations
- Fruit zone is trained higher at 1-1.2m above ground to avoid frost and humidity.
- Canopies are higher, up to 1.9m above ground to maximise exposure to the sun.
What is the typical planting density of Alsace?
4400-4800 vines per hectare
What are the main hazards experienced in Alsace?
- Downey and powdery mildew
- Grape vine moth
- Esca
- Frosts, hail and even drought can also be issues.
What is the average harvest period of Alsace? Why?
Early September to late October.
Due to the range of styles being made and the diversity of sites (altitude, exposition).
Why is Gewürtztraminer typically fermented at mid-range temperatures?
- Gewurztraminer has pronounced aromas, not affected by slightly higher fermentation
temperatures, and has high sugar levels. A slightly higher fermentation temperature is
desirable to ensure that the yeast can ferment effectively to high alcohol levels. - Low fermentation temperatures are avoided as its characteristic banana aroma is not desired in Gewurztraminer.