D3.C2. Bordeaux Flashcards
What are the top grape varieties in Bordeaux in terms of total hectares planted?
- Merlot: 60%
- Cabernet Sauvignon: 20%
- Cabernet Franc: 7-8%
- Sémillon
- Sauvignon Blanc
- Muscadelle
What are the percentages of AOC red, white, rosé and sweet wines produced in Bordeaux?
- Red: 85%
- White: 10%
- Rosé: 4%
- Sweet: 1%
What are the key developments in the history of Bordeaux in history?
-17-18th century: Marshy and unsuitable for agriculture, was drained by Dutch residents in the city of Bordeaux and planted
- In 1855, a major commercial exhibition, the Exposition Universelle de Paris. The Bordeaux chamber of commerce asked the region’s brokers to compile a classification of the wines. Estates of the Médoc plus Haut- Brion in Graves were classed into five bands, those of Sauternes into three
What is the total area under vine in Bordeaux?
111,000 hectares planted
What are the percentages of inexpensive to mid-priced and premium to super-premium wines produced in Bordeaux
- Inexpensive to mid-priced: 70%
- Premium to super-premium: 30%
What is the climate of Bordeaux?
Moderate maritime
What are the moderating factors that affect the climate of Bordeaux?
- Atlantic Ocean : Brings rain and humidity (less pronounced in the right bank)
- Gulf stream: Extends the growing seasons
- Landes Forest
- Coastal sand dunes
- Garronne and Dordogne Rivers and Gironde Estuary
Why is the climate cooler in northern Médoc than Southern Médoc and Graves?
In the northern Médoc, the Landes Forest is less of a feature and the landscape is more open to maritime
influence
What is the average rainfall in Bordeaux?
950 mm
How can rain be an effect for vintage variation?
- Rain at flowering can result in poor fruit set
- Rain throughout the growing season can result in increased disease pressure
- Rain at and following véraison can lead to unripe fruit and fungal diseases
- Rain at harvest can dilute flavours
How does the climate change affect Bordeaux?
- Climate change has led to hot, dry summers with insufficient rainfall
- Hot dry years such as 2003 can lead to wines, both red and white, with low acidity that lack balance and with higher alcohol
In which years large areas of vineyards are affected by frost in Bordeaux?
- 1956
- 1991
- 2017
In the Médoc, why are the most prestigious wines tend to be close to Gironde estuary?
Gironde estuary has a moderating influence on the climate and often protects vines from frost
What is the origin of deposits of gravel and stony soils in Bordeaux?
They are carried to the region by floodwaters from the Pyrenees and the Massif Central many thousands of years ago
What is “croupes”?
All the top estates of the Left Bank are planted on gravel mounds known as croupes
What are the advantages of gravel soil?
- Even after the showers and storms, to which the Left Bank is prone, the roots of the vines soon dry out and the grapes can continue to ripen
- Heat retention
What is the disadvantage of gravel soil?
In extremely hot years, such as 2003 and 2005, the excellent drainage can put some vines at risk of drought stress, especially in ares where soil is shallow (as in Pomerol, where soils are rarely more than a metre deep)
In which area of the Left Bank, there are also pockets of clay?
Saint-Estpéhe
How is the soil in the Right Bank?
There is far more clay in the soil, although there are significant patches of gravel in certain sectors of the Libournais
Why is the dominant variety in the Right Bank is Merlot?
It is ideally suited to clay soils. It ripens fully in almost all vintages. It accumulates more sugar and thus alcohol than Cabernet Sauvignon and Cabernet Franc
From where do the best wines come from in the Right Bank?
From the grapes grown on the limestone plateau or the gravel section that borders Pomerol
What are the viticultural characteristics of Merlot?
- Early budding (vulnerable to frost)
- Mid ripening (can be picked before the autumn rains)
- Susceptible to coulure, drought and most botrytis bunch rot
Merlot is the dominant grape in which areas of Bordeaux?
- Right Bank
- Northern Médoc
What is the advantage of Merlot in Bordeaux?
- It ripens on these cooler soils and the water-holding capacity of clay enables it to produce the large berry size typical of Merlot
- It also reaches higher sugar levels and therefore higher potential alcohol levels than either of the Cabernets
- This was an advantage in earlier decades but, with a warming climate, is less so today
What does Merlot add to the Bordeaux blend?
- Cool years: Medium to pronounced intensity fruit (strawberry and red plum with herbaceous flavours)
- Hot years: Cooked blackberry, black plum
- Medium tannins
- Medium to high alcohol
What are the viticultural characteristics of Cabernet Sauvignon?
- Late budding (protection from spring frost)
- Late ripening (vulnerable to autumn rains)
- Small-berried thick-skinned variety with high tannin content, resulting in wines with high tannins
- Prone to fungal diseases, especially powdery mildew and the trunk diseases, Eutypa and Esca
- Produces the highest quality fruit on warm, well-drained soils, such as the gravel beds of the Médoc
What does Cabernet Sauvignon add to the Bordeaux blend?
- Pronounced violet, blackcurrant, black cherry and menthol or herbaceous flavours
- Medium alcohol
- High acidity
- High tannins
What does Cabernet Franc add to the Bordeaux blend?
- Red fruit
- High acidity
- Medium tannins
When and why is the plantings of Malbec replaced with Merlot in Bordeaux?
After the hard frosts of 1956, Malbec was mainly replaced with Merlot, which is easier to grow in Bordeaux
What are the viticultural characteristics of Petit Verdot?
- Early budding (prone to spring frost)
- Late ripening (prone to autumn rain and insufficient ripening)
If used what is the percentage of Petit Verdot in Bordeaux blends?
Less than 5%
What does Petit Verdot add to the Bordeaux blend?
- Deep colour
- Spice notes
- High tannins
What are the viticultural characteristics of Sémillon?
- Mid budding
- Mid ripening
- High yielding
- Susceptible to botrytis bunch rot and to noble rot in the right conditions
Tasting notes for Sémillon:
- Low intensity apple, lemon and, if under ripe, grassy, flavours
- Medium body
- Medium alcohol
- Medium to medium (+) acidity
What does Sémillon add to high quality dry white Bordeaux blends?
- Low to medium intensity aromas, weight and body, and medium acidity
- It softens Sauvignon Blanc’s more intense flavours and high acidity
- It has a strong affinity with vanilla and sweet spice flavours from new French oak
Why do top Sauternes wines like Ch. Climens or Ch. d’Yquem tend to have a high proportion of Sémillon?
- It is more susceptible to botrytis than Sauvignon Blanc
- It has ageability, developing toast and honeyed notes with age in contrast to Sauvignon Blanc that can hold but whose flavours do not evolve
What does Sauvignon Blanc add to the dry Bordeaux blends and sweet botrytis-affected wines?
- Grassy and gooseberry fruit
- High acidity
What is the trend for Sauvignon Blanc in Bordeaux?
Single variety dry wines
What is the planting density for top quality vineyards in Bordeaux? Why?
- 10,000 vines per hectare
- It is suitable for the relatively infertile soils of the region resulting in moderate vigour
Why does close planting adds to costs?
- More plants
- More trellising
- More time for vine training
- More ploughing, spraying
What is the advantage of close planting?
It makes the best use of expensive vineyard land
What is the planting density in vineyards in less prestigious appellations of Bordeaux?
3000-4000 vines per hectare
What is the most common trellising system in Bordeaux?
- Left Bank: Double Guyot
- Right Bank: Single Guyot
Why do some prestigious estates in Bordeaux favour cordon-trained, spur-pruned vines?
Arguing that it reduces yields naturally and gives better aeration to the bunches
What are the viticultural hazards in Bordeaux? What are the treatment modalities?
- Downy mildew, powdery mildew and botrytis bunch rot: Canopy management (leaf removal) to improve aeration and deter rot. This also exposes grapes to ultraviolet light to aid ripening
- Eutypa dieback and Esca: Soft pruning
- Flavescence dorée : Insecticides, but such treatments make the growing band of organic and biodynamic producers uneasy because of the use of synthetic insecticides
What is the risk of leaf removal? How can this risk be reduced?
- Sunburn and raisining
- By removing leaves late in the season when extreme heat is less likely and the bunches can benefit from the better aeration
Why is bunch-thinning less popular now in Bordeaux?
Some viticulturalists argue that it can unbalance the vine and that pruning short in winter is a better way to control yields
What is the trend for the yields in Bordeaux?
Yields have certainly decreased over the past two decades; they now average 50 hL/ha
What can be the results of exaggeratedly low yields, which used to be a fashion for especially on the Right Bank
- Super-concentrated wines that could often be jammy or fatiguing
- The sense of place, which is a hallmark of fine Bordeaux, is obscured by excessive concentration that robs the wine of any nuance
How did the harvesting changed in time in Bordeaux?
- Previously the teams were hired for a defined period. Thus, in most vintages some grapes would be picked under ripe, others overripe, and the remainder at the right moment
- Today harvesting teams are hired for a longer period and expect some days of paid idleness should the harvest be interrupted by rain
What is the disadvantage of hiring workers from other EU countries in Bordeaux?
Boarding the workers throughout harvest, further adds to the cost
When machine harvesting is preferred in Bordeaux?
- In some parts of the region, such as the northern Médoc, where it is hard to find workers, as the vineyards are a two-hour drive from Bordeaux
- To collect grapes quickly if fungal disease pressure is high or if the weather forecasts is for rain or storms
- Grapes intended for high volume inexpensive wines are typically picked by machine
The level of sorting depend on which factors in Bordeaux?
- It depends on the value of the wine and the quality of the vintage
- Inexpensive wines will not be routinely sorted
- In the very best vintages, even top estates may decide not to sort in the winery because of the uniformly high quality of the fruit and because they have sorted in the vineyard
What are the advantages of plot-by-plot winemaking?
- Grapes can be picked at optimum ripeness
- Making separate small lots of wine increases the options for blending
Which kinds of vessels are used for the fermentation of red wines in Bordeaux?
- Wood, stainless steel and concrete
- All are fitted with temperature control
- Fermentation takes place in closed vats with pump-overs as the usual practice
What is the preferred fermentation temperature and duration for the red wines in Bordeaux?
- Early drinking wines: Mid-range fermentation temperatures and a short period on the skins after fermentation (5-7 days) to preserve primary fruit and to limit the extraction of tannins
- Wines intended to be aged: Mid-range to warm fermentation temperatures and a total of 14–30
days on the skins
How do the maceration times change in poor vintages if the fruit is not fully ripe
Maceration times are reduced
Which kind of presses are used in Bordeaux? Why?
- Pneumatic presses dates or hydraulic presses
- Because of their gentle extraction
Where are the free run and press wine transferred after pressing in Bordeaux?
Into 225-litre barrels (barriques), and the winemaker will decide later what proportion of press wine the final blend will contain
What do some top-quality estate do to ensure rapid completion of malolactic conversion?
- Inoculation
- Heating the cellars
What are the preferred vessels for aging red wines of Bordeaux?
- Simpler wines are typically aged in stainless steel, concrete vats or large vats for 4–6 months and oak chips may be added for an oak flavour effect
- High quality wines are matured in French oak barriques. Most common is a mix of new, one-year old and two-year old barriques but some very prestigious properties will use up to 100 per cent new oak
What is the trend for new oak usage in recent years?
It has been decreasing
What are the common choices of winemakers in terms of barrel aging in Bordeaux?
- They use a range of barrels from different cooperages for greater perceived complexity
- Level of toast is typically medium to medium plus
- 18–24 months of aging
What is the usual frequency racking in Bordeaux?
Every three months
Why do some producers prefer to leave the wine undisturbed on the lees without racking in Bordeaux?
To prevent reduction and to help to soften tannins by using micro-oxygenation to replace the oxygenation caused by racking
What are the options for the time of blending?
- Blending over the winter: Most estates, specially those that opt to present their wines in the spring for the en primeur tastings use it. The outcome is not just a near-final blend of the main wine, but a deselection of wines that will end up in the estate’s second or third label or that will be sold off in bulk to merchants
- Blending before bottling: Minority of estates blend a few months before bottling, when the blending team can assess the evolution of each variety and each lot before making the final decisions
What are the two styles of rosé wines produced in Bordeaux?
- Traditional Clairet
- Lighter coloured rosé
Which grape varieties are used for the rosé production in Bordeaux?
- Merlot
- Cabernet Sauvignon
Which methods are used to produce rosé wines in Bordeaux?
- In the past, wines were made either from younger vines or by the short maceration and bleeding off method
- Newer style lighter coloured rosé is more likely to be made by direct pressing
The decision either to press the grapes immediately on arrival or leaving them on their skins up to 24 hours for white grapes depend on:
The style of wine that is intended.
- Pressing immediately delivers maximum freshness
- Cold soaking creates wine with more aromatic and phenolic complexity, although the grapes need to be fully healthy, otherwise off-flavours could be extracted
What are the common winemaking choices for the inexpensive white wines of Bordeaux?
- Fermentation at cool fermentation temperatures in stainless-steel tanks
- Remaining in the tanks for a few months before being clarified and bottled
What are the common winemaking choices for the mid-priced white wines of Bordeaux?
They are often left on the fine lees for 6– 12 months, which will give them more weight and complexity