3. Port Flashcards
How did Port production come to begin in history?
17th century trade war between England and France meaning England had to buy more from Portugal. Big red wines were popular, they started adding Brandy so they got to England in good condition.
Fortification during fermentation became popular when some Brits visited and tasted sweet wines that were better quality.
What are three examples of famous old Port shippers establish at the beginning of the Port trade?
Warres
Taylors
Croft
What was the traditional role of shippers and how has it changed?
Traditionally shippers were essentially agents who took a commission for shipping Port abroad after buying it from brokers in the Douro.
They have since mostly become producers as well
What was the treaty that ensured lower prices for Portuguese wines in England? When was it signed?
Methuen Treaty 1703
Describe the slump and recovery of Port quality in the 18th Century.
Poor quality products became prevalent leading to lower demand and therefore over supply and slumping prices.
The Real Companhia Velha introduced by the prime minister was able to fix pricing and control the spirit used for fortification. Quality increased, and prices followed.
Describe the decline of the 19th century
The country suffered through the Peninsula Wars and then a civil war. Followed by mildew and the phylloxera.
What are the two governing bodies that began at the beginning of the 20th century and what did they do?
- Casa do Douro (1932) - supervised growers
- Instituto do Vinho do Porto (1933) - administered and supervised the industry (mostly production)
- They both graded vineyard parcels from A to I based on suitability
- They controlled the aguardente that was used
What did the World Bank Scheme of the 1980s do for Port growers?
Offered low interest loans for people wanting to replant the five prescribed varieties on A or B land. Led to new developments in terraces eg. more plantings on patamares
How did makers come to be able to source their own aguardente?
What effect did this have?
Portugal entering the EU in 1986.
Increased quality overall
What is the current governing body that replaced the Casa do Douro and Instituto do Vinho do Porto?
Instituto dos Vinhos do Porto e do Douro (IVDP)
In DOC Douro, what is the:
- Total appellation area
- Total area under vine
- Total vineyard area registered for Port production
- 250,000 hectares
- 43,000 ha planted
- 32,000 ha for Port
What is the climate in the Douro?
Warm, continental.
Hot summers and cold winters.
Very far from the coast on the west, and protected by the Serra do Marao on the same side.
What are the three sub-regions of DOC Douro?
West to East:
- Baixo Corgo
- Cima Corgo
- Douro Superior
Describe the characteristics of the Baixo Corgo (3)
- Furthest West
- Coolest and wettest
- Produces fruit for many inexpensive Ruby and Tawny Ports.
Describe the characteristics of the Cima Corgo (3)
- Warmer and drier than the Baixo Corgo
- Where most of the big names have vineyards
- Produces fruit for high quality aged-indicated Tawnys and vintage ports
Describe the characteristics of the Douro Superior (3)
- Significantly hotter and drier than the other sub-regions
- Sparsely planted
- Somewhat flatter, allowing for mechanisation.
What environmental factors will contribute to variances within the sub-regions of the Douro?
- Altitude
- Aspect
- Proximity to the river
Describe the typical soil profile of the Douro valley.
Stony, shallow top soil. Poor in nutrients and free-draining. Underlying schist rock, split in vertical layers. Roots can grow deep more easily to find water.
How is water stress managed?
Irrigation is allowed under exceptional circumstances.
The schist allows the vines to grow deep roots, as opposed to the granite bedrock that surrounds the regions.
Drought resistant, varieties (Touriga Nacional, Tinto Cao)
Drought resistant rootstocks (rupestris/berlandieri hybrids)
What are the three vineyard layouts present in the Douro?
- Socalcos
- Patamares
- Vinha ao Alto
What are Socalcos?
A traditional method of vineyard layout. Narrow terraces, supported by a retaining wall of dry rock.
- Not suitable for mechanisation
- UNESCO heritage protected
- 6000 vines per hectare density, can be reduced to allow room for a small tractor.
What are Patamares?
More modern terraces that are supported by a steep earth ramp rather than a retaining wall. Positive: - Accessible by small tractor from diagonal tracks on the slope - Cheaper to implement and maintain Negative: - Erosion and weed growth - Lower density than socalcos (3000-3500 vines per hectare)
What are the two kinds of Patamares? Describe them.
- Large, wide patamares which were the original form. Two rows of vines on each terrace meaning higher yield, but led to uneven ripening.
- Narrow patamares. More modern version with one row of vines, which are often tilted toward the slope and to the middle of the row to help water retention and reduce erosion. More even ripening.
What is Vinha ao Alto?
A vineyard layout option where vines are planted in vertical rows up the slopes. Relatively limited use.
Positive:
- Least expensive
- higher density than patamares 5000 vines per hectare)
Negative:
- Cannot be mechanised if slope is above 40% incline.
- Water run-off and erosion.
What is the most common training, pruning and trellising method in the Douro?
Either cordon-trained and spur pruned, or head-trained and cane-pruned.
Trellising is generally VSP for even sun exposure and mechanisation where possible.
What is the maximum yield permitted for Port production?
What is it usually?
55 hL/ha
More likely to be around 30hL/ha
What viticultural hazards pose threats to vineyards in the Douro? (3)
- Late spring frosts, particularly at high altitude
- Sometimes, cool wet weather from the west in early summer - disrupting flowering/fruit set
- Downy mildew and botrytis bunch rot (particulalry in Baixo Corgo).
Fertilisers, herbicides and fungicides are commonly used. What other non-chemical techniques are used to improve vineyard health?
- Cover crops on Vinha ao Alto vineyards.
2. Mowers where there is space
Describe the harvest in the Douro.
- Typically by hand.
- Starts in the Douro Superior, moves westward, ending in the Baixo corgo.
- Can span several weeks to account for different altitudes/aspects/varieties
What are the five prescribed varieties that have been the focus of replanting in the Douro?
What are the two other important black varieties?
- Touriga Nacional
- Touriga Franca
- Tinta Roriz
- Tinta Barroca
- Tinto Cao
- Tinta Amarela
- Sousao
What are the key characteristics of Touriga Nacional? (7)
- Mid-ripening
- Thick skins, deep colour, high tannin
- High acid retention
- Black fruit and floral character.
- Long ageing potential
- Excessive vigour
- Susceptible to coulure
What are the key characteristics of Touriga Franca? (5)
- Late-ripening
- Tight bunches, thick skins
- Red and black fruit flavours
- Vigourous, needs to be summer pruned.
- The most planted variety.
What are the key characteristics of Tinta Roriz? (4)
- Synonym for Tempranillo and Aragonez
- Early-ripening
- Brings body and colour to the blend
- High yielding, needs to be controlled
What are the key charcteristics of Tinta Barroca? (4)
- Early-ripening
- Needs to be planted in cooler sites (otherwise heat damage and shrivel are problems)
- Lends more earthy flavours to the blend.
- Lower in colour and acidity than other port varieties.
What are the key characteristics of Tinto Cao? (4)
- Low-yielding
- Small, thick skinned grapes.
- Late-ripening, heat tolerant
- High acid and concentration
What are the two white port varieties, and what are their key charcteristics?
- Malvasia Fina (boal in Madeira) Neutral, medium acidity, full bodied, slightly honeyed character.
- Moscatel Galego Branco - (Muscat Blanc a Petit Grains). Highly aromatic, often used for un-aged styles
What is the usual range of residual sugar for port wines?
80-120g/L
How long is fermentation?
Usually only a couple of days, so extraction needs to be efficient.
What are the five methods for extraction during fermentation?
- Foot-treading in lagares
- Modern, mechanical lagares
- Pumping over
- stainless steel pistons
- Autovinifiers
What is a lagar? Describe foot treading in lagares
Lagar is singular for lagares, and is a wide, shallow square tank that allows for a large surface area between must and grape skins. Foot treading is effective, and won’t crush seeds. It is still used for some premium and super-premium wines.
What are the pros and cons to a mechanical lagares?
Pros:
- Reduce the need for a large, expensive labour force each year.
Cons:
- Large initial investment cost.