by Wine Owners
Posted on 2019-04-08
Much has been said of the hot, drought conditions of 2018 from July onwards and the consequent high alcohols, higher than normal pHs and high polyphenols (colorants and tannins) that resulted in dense, rich, darkly coloured wines.
A warming planet we are told is likely to get warmer and wetter – in which case the sort of challenges posed by the weather in 2018 are likely to become a more common occurrence. Might whole bunch fermentation be a rational response to these increasingly extreme conditions?
Whole bunch fermentation is a bit of a nouveauté in Bordeaux, practised by producers with a leaning towards Burgundy style and weight.
There are a number of arguments in favour of whole bunch:
Stems act as a sponge in fermentation and leach colour out of the wine by absorbing some of the colorants. In a really hot Bordeaux vintage such as 2018 this helps make the wine’s robe less black and more attractive.
Stems in a very hot vintage are more likely to be fully lignified and a higher percentage can be used without imparting unripe flavours into the wine.
Stems give a perception of greater freshness, apparently because of additional molecules that have ‘attractively astringent properties’. In reality they don’t actually lower the pH; they tend to do the opposite since the pH of stems is higher than in grapes.
Stems marginally lower alcohol levels in the finished wine.
Two estates in Bordeaux stand out for their practise of vendanges entières:
Chateau Rouget in Pomerol is owned by Domaines Labruyère who famously own Jacques Prieur in Burgundy. The wine was exceptional, very rich yet beautifully balanced, a gorgeously controlled mid-palate and with alcohols of 14 degrees (low for 2018 given a 85% merlot dominant blend) and with a pH score of 3.62. That’s low for the vintage, where other Chateaux were boasting about how low their pHs were at 3.65-3.69. Small differences in pH can make a very significant perceived difference.
Chateau Carmes Haut Brion appears to also be a fan of Burgundian weight and style, and have used whole bunch for the last few vintages very successfully, having produced a shockingly good 2017. In a much hotter year than any of the preceding 4 vintages how would it fare? Very well, with a perfumed nose, croquant fruit, stacked for sure, yet with real presence and poise fin de bouche.
In our view both these Chateaux produced wonderful wines in 2018, and insomuch make an argument for how whole bunch can work well in a hot vintage where balance and constraint are the watchwords, and where finesse and focus are much harder to achieve than in a more normal, temperate year.
by Wine Owners
Posted on 2019-04-08
Given the climatic conditions of the Bordeaux 2018 vintage described in an earlier post here – what impact did this have on the wines produced?
The new chai in Beychevelle which was used for the first time in 2016 and which helped to manage the 2018 vintage.
©Fabian Cobb / Wine Owners
The generic statistics fail to reveal the arduous nature of the vintage for the vine growers and whilst the widespread difficulties left their imprint on the wines the essentially dry and hot summer which lasted through to the autumn brought a phenolic ripeness to the fruit and permitted the chateaux to harvest in conditions almost unseen for decades.
The three main issues in the Bordeaux 2018 vintage:
Devastating phenomena such as hail which continued late into the year
Mildew – a threat which persisted until early summer
Drought-like conditions in the summer and autumn
Hail, as large as tennis balls, arrived in Bordeaux in May. The devastation it wrought on some vineyards was total and some estates will produce no wine from this vintage. Others were luckier although it reduced their crop. Some vines, incredibly, although struck by hail, managed to repair themselves. For one estate this was only the third time in 30 years hail had struck the vineyards – not an easy phenomenon to manage.
Given the persistent rain the mildew was extensive in Bordeaux in 2018. The warm almost tropical weather in June followed by further outbreaks in July brought huge casualties across Bordeaux. This was a year of firsts. Managers had rarely if ever seen such extensive ground rot and one estate in Margaux lost two-thirds of their crop overnight. This reduced the remaining crop to one bunch per vine. A common way for estates to deal with the threat of mildew is to de-leaf the vine permitting air to circulate and dry out the plant. However, the canopy might be needed later (as it turned out) and if this effeuillage was too drastic the consequences would be felt later on. Maintaining a canopy might also help to maintain the freshness and fruit. As it turned out, the second half of the year needed to use the resources (water) of the first part. Without this water it would have been a very different vintage.
Once the anti-cyclone established itself over the region the grapes matured with a richness unseen before. This in itself meant additional care at harvest time. One estate manager commented that the change in conditions from the end of July to when people returned from their holidays in August was ‘spectacular’. Something he ‘had never witnessed in the 25 years or working on the estate’. Not only that but the meteorological forecast was ‘extraordinary’ – and was fulfilled.
Given the replenishment of the water table the remaining harvestable crop was of outstanding quality. Merlot berries were normal size because their growth cycle coincided more with the presence of water in the soil but the Cabernet Sauvignon were small and concentrated – but not ‘cooked’ nor ‘confit’.
Some estates might produce normal or near-normal yields but 20-30% less was common, 50% not uncommon, with some reduced to 10hl/ha - a volume not seen since the 60s.
Judging maturity is probably the most important factor to produce a good wine. Undoubtedly, given the richness of the grapes this was going to be another area of distinction for the various estates – when to harvest? Ironically, some estates decided to harvest early to preserve acidity (one source of freshness). But it’s not clear this was a functional objective. As one technical manager told us, ‘some estates near them were harvesting 10 days earlier than them, when normally they would be harvesting a week later. Clearly, a disparity in vision. When the harvest did come in, there were still summer conditions and, if they could, estates cooled the fruit down before it was processed. Realising the grapes were rich, extraction would need to be managed ‘almost by itself’. Reducing the temperature of fermentation was a more common technique along with less pigeage or remontage, for example, and other techniques often employed to extract more. This helped to preserve the fruit and freshness. Tannins dissolve more in higher alcohol solutions - extracting the polyphenols wasn’t going to be a problem in 2018. Some estates had the highest IPT (Indice de Polyphénols Totaux) of any year on record.
The successful red wines from the Bordeaux 2018 vintage (and there are a lot less of those than expected) are dense, deep coloured almost opaque in cases. The benchmark 2018 nose is red fruit driven with some chocolate and coffee aromas. The pallet is full and round, and the tannins have the potential to be silky. Surprisingly, the wines have maintained a degree of freshness. The wines are structured with unusual body. It is a good year for the dry whites which have preserved good acidity and are perfectly ripe. The sweet whites are concentrated and rich but lack the complexity of really good years due to the late arrival of botrytis – it was simply too dry.
A model of the new chais currently underway at Chateau Figeac
©Fabian Cobb / Wine Owners
by Wine Owners
Posted on 2019-04-08
To compare with the 2016 vintage in Bordeaux visit our post 2016 vintage conditions
Chateau Pichon Longueville Baron – 2eme cru classe ©Fabian Cobb / Wine Owners
Looking over the weather stats for the Bordeaux 2018 vintage one is struck by several positive features and, unfortunately, a couple which are likely to cause some difficulties for winemakers. There are certain key weather conditions which the vine needs to perform well. Bearing in mind, always, that generic weather data does not focus on an individual terroir and the way it might cope with the weather nor does it reveal winemakers’ attitudes and decisions.
Bearing in mind the chart above, there are 5 essential conditions for a good vintage:
A calm, warm and relatively dry period in the Spring to permit healthy flowering and
similar conditions for fruit set a little later;
Gradual introduction of dry summer conditions to induce hydric stress no later than veraison (when the grapes change colour)
Warm weather for even maturation with adequately dry (but not too dry) conditions in August and September, and
Optimum harvest conditions in September and October without rain.
Looking at the chart above one can see that many of these conditions appear to have been met except that although cumulative precipitation was beneficial in the first few months, the wet conditions in June and July plus the warm weather encouraged the onset of aggressive mildiou which provided very difficult conditions for many and particularly estates managed on biodynamic principles. It was an unusually sunny and dry summer fulfilling the criteria for a good vintage although a hail storm in late May affected a few properties in the Medoc. The resulting long period of hot and dry conditions might be referred to as a ‘drought’ – it hardly rained at all for 4 months. The year which had started late for vine development reversed itself and it became an ‘early’ vintage – a rare enough occurrence in Bordeaux.
by Wine Owners
Posted on 2019-04-05
Weather-wise the 2018 growing season was a game of two halves; the first half was excessively wet and was followed by a hot drought through to harvest.
As well as the drought, mildew pressure affected the left bank and Graves, in some cases wiping out 60-80% of the potential crop. The right bank fared better on this front as the clay soils had the upper hand on fighting the drought due to higher levels of water retention.
Merlot was always most likely to be affected by the vintage’s heat, with some properties seeing alcohols rise quickly through fermentation, topping out at 15-16 degrees. Because of this it is assumed that this is a left bank vintage. But merlot came in with the highest alcohols off warmer gravel beds of the left bank than it did on the predominantly cooler clay soils of the right bank.
2018 has produced a singular vintage and one of the most heterogeneous we have tasted en primeur. Estates that tamed the heat, sugar, pHs and tannins resulted in bold expressive wines with massive aging potential, the very best of which may well become legends. Concentration was the word most employed by scribes.
Maybe more than ever, it’s a year where terroir appears to have played a significant part in cutting the grade. However unfair this may seem, the best soils and expositions tended to deliver the best wines and the 1855 classification played out well. As such it’s a year in which Petrus, the First Growths and the best bit of the St. Emilion plateau (Canon, Cheval Blanc, Clos Fourtet) all excelled.
As usual, there were plenty of superlatives being thrown around; Monsieur Tesseron of Pontet Canet claimed “this is clearly the best modern day vintage we have produced, better than ’16 which was better than ’10”. There is little doubt there will be some huge scores from the naturally ebullient.
There are also great disappointments and plenty to avoid. Margaux, Graves and St. Estephe were probably the most inconsistent appellations whilst the others all had their ups and downs.
It’s a hot vintage with big, bold and powerful wines: an absolute joy for some palates but maybe just too much for others. We look forward to the in-bottle tastings but in the meantime let us wait, with bated breath, for the prices!
Top picks by appellation followed by the ‘ones for the notebook’ wines:
St. Estephe: Cos d’Estournel, Montrose, Lafon Rochet
Pauillac: Grand Puy Lacoste, Lafite, Latour, Pedesclaux, Pichon Baron
St. Julien: Branaire Ducru, Gruaud Larose, Lagrange, Leoville Barton, Leoville Las Cases, Talbot
Margaux: Malescot St. Exupery, Margaux, Pavilion Rouge, Rauzan Segla
Graves: Carmes Haut Brion, Clarence de Haut Brion, Domaine de Chevalier, Haut Bailly
St. Emilion: Canon, Cheval Blanc, Clos Fourtet, Petit Cheval, Quinault L’Enclos, Villemaurine
Pomerol: Gazin, Rouget, Petrus, Vieux Chateau Certan
And ‘ones for the notebook’ (good value and/or under the radar): Chantegrive, Chateau de Pez, Croizet-Bages, La Dominique, Lagrange, Langoa Barton, Monbrison, Segla