Bordeaux Flashcards
(136 cards)
Describe Bordeaux’s location
SW France, close to the Atlantic. Traversed by the river Garonne and river Dordogne, which merge to form the Gironde estuary.
What separates the two banks of Bordeaux
Vineyards to the west of the Garonne and Gironde form the Left Bank. Vineyards to the east are the Right Bank. Vineyards between the two rivers are Entre-Deux-Mers.
Percentages of grape color plantings in Bordeaux
Nearly 90% of plantings are black. AOC wines are 85% red, 10% dry white, 1% sweet white and 4% rose.
Nearly 60% under vine is Merlot
CS 20% CF under 10%
How did Bordeaux’s specialized merchant system come to be?
Rather than proprietors selling wine, in Bordeaux a merchant middle man is used. This dates back to the 17-18th centuries when these wines were first rising in popularity. An entrepreneurial class of English, German and Dutch moved in and distributed wines, establishing international reputation.
How did the Exposition Universelle de Paris changes the wines of Bordeaux?
In 1855, for this major commercial exhibition (EUP), the Bordeaux chamber of commerce asked the region’s brokers to compile a classification of the wines.
The classification was based on price. All of médoc plus haut brion (in graves) were classed into five bands. Sauternes into three bands.
How much of wine production in Bordeaux is premium?
There are 111,000 hectares under vine and about 70% are inexpensive to mid-priced (Bordeaux or Bordeaux superior). Only 30% are premium or super premium.
A prestigious appellation such as Pomerol only accounts for about 800 hectares.
How does climate affect the wines of Bordeaux
Moderate maritime climate. Cooling influence from the Atlantic to the west.
In the best years, there is gentle warmth throughout the growing season, sufficient rainfall for growth + ripening, relatively dry and warm autumn = steady and complete ripening.
Results = excellent balance of tannins, sugar and acidity. Excellent for longevity of vintages.
What partially protects the left bank of Bordeaux from Atlantic storms? How does this effect the growing environment?
Extensive manmade pine forest.
Estates that fringe the forest (Chevalier in Léognan, many in Listrac in the Médoc) are cooler/less reliable in terms of full ripening. Neighbors to the east do not have this problem.
How much rainfall is there in Bordeaux?
Variable. With an average of 950 mm a year, but with marked variation year to year.
Excessive rain is a key factor in vintage variation.
Climate change in Bordeaux
Has led to hot dry summers, insufficient rainfall.
Hardy varieties planted in Bordeaux can resist temperature extremes but hot dry years (2003) leads to wines with low acidity, lacking balance and often with higher alcohol (growers must wait for phenolic ripeness before picking)
Maritime influence on Right Bank Bordeaux
Less pronounced because of its further east position.
Frost and hail in Bordeaux
Prestigious wineries of the médoc tend to be close to the Gironde estuary (moderating effect).
Hail, more sporadic, has been more of an issue over past decade.
Frost has historically had a huge effect on vintage variation in terms of volume.
2017 - 33% less wine than the area’s 10 year average
Benefits of soils of Bordeaux’s Left Bank
Both the Médoc to the north and Graves to the south have deposits of gravel and stony soil. Some are mixed with clay and sand.
Since the left bank is prone to rainfall, well draining clay allows roots to dry quickly and ripening to continue.
Gravel also helps with heat retention, facilitating slow ripening.
Soils of Bordeaux’s right bank
Much more clay than left bank.
This is a contributing factor to Merlot being the dominant grape. It ripens fully in almost all vintages, and accumulates more sugar and alcohol than CS or CF (historically seen as a benefit).
However, best wines of the area come from grapes grown on the limestone plateau or the gravel section that borders Pomerol. 
Merlot’s growing environment in Bordeaux
Early budding (vulnerable to spring frost), mid ripening (advantage: grapes can be picked before autumn rain).
Susceptible to coulure, drought and botrytis. Lots of sorting needed. Reduced yield a risk.
Ripens fully in cool years, unlike CS.
Dominates right bank + cooler northern Médoc (more fertile soil, high clay content -> enables larger berry size typical of Merlot)
Reaches higher sugar levels + therefore higher potential alcohol levels (compared to CS and CF). This used to be an advantage but climate change has changed that.
Cabernet Sauvignon in Bordeaux
Late budding (some protection from spring frost). Small berry, thick skin with high tannin content.
Prone to fungal disease, especially powdery mildew and the trunk diseases (eutypa and esca).
Ripens late, and has to be grown on warmer soils, which makes it vulnerable to early autumn rains.
CS produces the highest quality fruit when on warm well-drained soils (gravel beds of the médoc).
Cabernet Franc in Bordeaux blends
Contributes red fruit, high acidity, medium tannin.
Malbec in Bordeaux
Mainly replaces by Merlot after hard frost of 1956
Petit Verdot growing environment in Bordeaux
Buds early and ripens even later than Cabernet Sauvignon, unpopular with growers in the past. 
Prone to spring frost, fails to ripen in cooler years.
Does best in the warmer parts of médoc.
Still few plantings but becoming more popular with warmer climate.
Sémillon in Bordeaux’s growing environment
Mid ripening. Susceptible to botrytis (noble rot in right conditions). Can be high yield.
Increasing popularity of Sauvignon Blanc in Bordeaux
Due to worldwide popularity, there are increasing amounts of dominant/single variety dry Sauvignon Blanc white wines being made.
Muscadelle in Bordeaux’s growing environment
Needs to be planted on well exposed site, as it is very prone to botrytis.
Vineyard density in Bordeaux for top vineyards
Traditionally top vineyards are closely spaced (10,000 vines per hectare) with vines planted one meter apart and Witt one meter between rows.
Close planting makes the best use of expensive land, and is suitable for the relatively infertile soils of the area - provides for moderate vigor.
Close planting adds to cost; more plants, more trellis, specialty over-the-row tractors plus more time and labor; vine training, ploughing, spraying.
Most common vine training in Bordeaux
Most commonly head-trained, replacement cane pruned - canes trained along wire.
Left bank: two canes (double guyot)
Right bank: one cane (single guyot)