Bordeaux Flashcards
(117 cards)
What is the climate of Bordeaux?
Moderate maritime
What are the natural factors affecting vineyards of Bordeaux?
Cool Atlantic Ocean is a cooling influence
The Landes pine forest partially protect maritime influence to the Left Bank, less influential in northern Médoc and estates that fringe those forests are cooler (Listrac and Domaine de Chevalier in Lèognan)
Marked rainfall variation year to year with a range of 950mm per year
Some years can be very hot and dry (eg 2003), with wines having low acidity and higher alcohol
Sporadic hail has been more widespread and destructive in the past decade
Frost can impact large areas (1956, 1991 & 2017 crop was decimated) and more prestigious estates close to the Gironde estuary affected positively by moderating influence
Give an example of vintage variation in terms of volume in Bordeaux
Frost-affected year of 2017, 33% less wines produced than 10 year avearge and 40% less than the large harvest of 2016
In Bordeaux, under what conditions great vintages with remarkable longevity are produced?
Gentle heat throughout growing season
Sufficient rainfall to promote growth and ripening
Fine, relatively dry and warm early autumns for steady and complete ripening
End result is excellent balance of tannins, sugar and acidity in grapes
What is the area under vines in Bordeaux?
111K hectares, majority Bordeaux or Bordeaux Superieur
What is the main soils on the Left Bank of Bordeaux?
Gravel and stoney soils
Top estates on gravel moulds called croupes
Pockets of clay exists especially in Saint-Estèphe, where wines are robust and characterful but not as acclaimed as those on gravel
What is the soil type on the Right Bank?
More clay soils
Patches of gravel and limestone plateau bordering Pomerol
Which grape variety in Bordeaux make up just under 60% of total plantings?
Merlot
What are the main characteristics of the Merlot grape and its role in Bordeaux
Early budding and Mid ripening.
Sorting necessary due to prone to coulure, drought and botrytis bunch rot.
Large sized berries.
Reach higher sugar levels so higher potential alcohol (less advantageous now).
Contributes medium to pronounced intensity fruits, medium tannins, medium to high alcohol.
Strawberry, red plum and herbaceous in cooler years.
Cooked blackberry and black plum in hot years.
In Bordeaux can fully ripen in cooler years. Can ripen on cooler clay soils.
What are the key characters of Cabernet Sauvignon?
Late budding and late ripening.
Thick skinned with high tannin content.
Prone to powdery mildew, Eutypa and Esca.
Best fruits on warm well drained soils.
In Bordeaux it adds:
Pronounced violet, blackcurrant, black cherry and menthol or herbaceous flavours. Medium alcohol, high acidity and high tannins.
In cooler years in Bordeaux, growers can struggle to ripen Cab Sauv fully leading to wines with high acidity, unripe tannins and little fruit. Hence blends with earlier ripening Cab Franc and Merlot.
What does the early ripening Cabernet Franc adds in Bordeaux blends?
Red fruits, high acidity and medium tannins
What are the key characteristics of Petit Verdot and their contribution to Bordeaux blends?
Early budding and late ripening.
Hard to ripen in cooler years.
Does best in warmer parts of Medoc.
Often less than 5% in blends.
Adds power, colour, spice and tannins.
More valued now with warmer climate.
What are the main characteristics of the Sémillon grape and typical dry wine style?
Mid ripening.
Susceptible to botrytis bunch rot and noble rot in right conditions.
Medium to medium (+) acidity, medium alcohol, medium body, low intensity, apple, lemon, grassy notes if under ripe.
In Bordeaux, what does Sémillon adds to dry and sweet blends?
Dry:
Low to medium intensity aromas, weight and body, medium acidity.
Softens Sauvignon Blanc’s intense flavours and high acidity.
Botrytis-affected Sweet:
Pronounced honey and dried fruits (lemon, peach) and waxy texture.
Top Sauternes have high proportion of Sémillon (Château d’Yquem).
Good ageability with development of toast and honey notes.
Strong affinity with cmvanilla and sweet spice from new French oak.
What does Sauvignon Blanc adds to Bordeaux wines?
Grassy and gooseberrry, and high acidity.
More dry single varietal or dominantly blends are now made.
Comment on the Muscadelle grape in Bordeaux
Need to be on well-exposed site.
Prone to botrytis bunch rot.
Mainly used in sweet wines, adds flowery and grapey notes.
Not related to Muscat.
What is the typical planting density of top Bordeaux vineyards and why?
10k vines per hectare.
Rows one metre apart with vines one metre apart within each row.
The density is suitable for The relatively infertile soils leading to moderate vigour.
What are the pros ans cons of close planting in Bordeaux?
Make best use of expensive vineyard land.
More costs associated with more plants, more trellising, specialist over-the-row tractors. More time needed for training, ploughing and spraying.
For basic Bordeaux AOC, what is the typical planting density?
3-4k vines per hectare
What is the main training system in Bordeaux?
Head trained with repalcement cane along wires.
Left Bank Double Guyot is more common and Single Guyot on the Right Bank.
less favoured is cordon-trained spur-pruned, but some top estates prefer it arguing it reduces yields naturally with better aeration to fruits.
In Bordeaux, what canopy management technique is used to reduce incodence if downy mildew, powdery milde and botrytis bunch rot?
Leaf removal during the summer to inprove aeration, which in turn increases exposure to ultraviolet light to aid ripening.
Leaf removal can happen on one or both sides of the row.
Sunburn and extreme heat exposure could happen, eg in 2003 in some vineyards where leaf removal happened grapes were raisined.
Less risky approach is to remove leaves in latter part of season where aeration is still beneficial.
With vines rotted from the inside by Eutypa dieback and Esca, how do Bordeaux growers tackle this problem?
New treatment called soft pruning.
Small cuts made to allow the wood to dry out and maximise opportunity for sap to flow around the vine.
In Bordeaux, how is the phytoplasma disease Flavescence dorée treated?
By insecticides.
But organic and biodynamic producers are uneasy due to usage of synthetic insecticides.
In Bordeaux, Whats been the evolution of removing bunches to co trol yields and to improve concentration?
20 years ago the practice of bunch-thin was approved.
Less popular now as the process could unbalance the vine and pruning short in winter is the better method.