Australia Flashcards
Australia History
*vines arrived with first settlers 1788
*1800-1850: commercial viticulture spread throughout all states - New South Wales, South Australia, Tasmania, Victoria, Western Australia
*Scotsman James Busby brought collection of cuttings from Europe in 1830’s and spread throughout (other European immigrants did the same, especially Italians)
Phylloxera
strict quarantine regulations
*South Australia still phylloxera free
home to some of oldest ungrafted wines in the world: Shiraz, Grenache, Cabernet Sauvignon
first exports 1850s
*took advantage of European market, especially UK, when Europe’s vineyards were decimated by phylloxera
Fortified Wines
focus late 19th century, early 20th
*Muscat Gordo Blanco (Muscat of Alexandria)
*Shiraz
*Grenache
waves of European immigrants after WWII increased demand for dry, non-fortified wines
Dominant Companies
from 1950s - Orlando (Jacob’s Creek), Lindemans, Hardy’s, Penfolds
*responsible for modernizing industry
*stainless steel and temp control
Boutique Wineries
1970s: planting/replanting vineyards in cooler regions
Export Marketing
Wine Australia embraced modern advertising (post 1985)
*label wines by varietal
*tasting descriptors on labels (made wines more accessible to consumers)
*wines accessible: ripe fruit, vanilla, coconut
**very successful - by early 2000s, world’s 5th largest exporter of wine
**shift to smaller production and higher-priced bottlings post 2008 = helped maintain strong export position
Total Plantings Rise/Fall
59,000 ha in 1990
170,000 ha in late 2000s
146,000 today
*huge oversupply - other countries follow Australia’s model and increasingly compete in export market (reduces demand for inexpensive Australian wine)
*strong Australian dollar, especially after 2008 financial crisis - Australian wine more expensive than competitors (Argentina, Chile)
*large producers forced to stifle grape prices to keep retail prices competitive
*series of serious droughts - increase cost for water for irrigation
**many producers forced out of business
**many producers shift focus to smaller production and high-priced bottlings
Geography
6th largest country in world
*mostly covered by desert and tropical rainforest = too hot for viticulture
*vineyards in SE corner of country: Southern Australia, Victoria, New South Wales, Tasmania
*clusters in Western Australia
*vineyards b/w 30-37 degrees S (equivalent to North Africa, Southern Europe in Northern Hemisphere)
**Queensland to north = ~28 degrees S
**Tasmania to south = 41-42 degrees S (equivalent to Porto and Central Italy)
Climate
wide range of different climates
*reliance on cooling/moderating influences of coast (Indian or Southern Oceans) for daily and seasonal temps
**exception of Murray-Darling Basin (hot, continental)
Coastal Influence
relatively flat country - little to stop cooling influences of the oceans
ex. Coonawarra in South Australia is 60 miles from coast, but has maritime climate
*winds from ocean reduce risk of frost but can disrupt fruit set
Mountain Influence
Great Dividing Range
*Queensland to western Victoria
*creates barrier protecting many of SE Australia’s vineyards from tropical weather systems from Pacific Ocean to NE
*regions in rain shadow with very low levels of rainfall (Riverland = 135mm during growing season; Hunter Valley east of range = 500mm but hot, humid climate)
producers looking for cooler sites at altitude for lighter-bodied, more elegant wines
*Orange
*Macedon
*Grampians
Drought
Low rainfall = constant threat of drought
*rain shadow of Great Dividing Range
at worst, rivers of Murray-Darling basin run low (vital source of irrigation)
Soil
oldest continent; individual land mass for over 100 million years; very complex geology
some regions with distinctive soils:
Coonawarra’s terra rossa
McLaren Vale - 40 unique soil types from 15,000 to 550 million years old
Production
2018: 7th largest producer; in high yielding vintages can compete with Argentina and Chile for 5th or 6th
production averages 12.6 million hectares (fairly steady)
Environmental Pros/Cons
Pros:
*intense sunshine
*relatively low rainfall
*low-humidity (low disease pressure)
*reliable ripening (except 2011, unusually wet)
Cons:
*lack of water
*drought
*soil salinity
*bush fires (smoke)
*birds and kangaroos
Irrigation
most vineyards rely on irrigation to ensure even ripening and protect quality (even in wetter areas b/c of fast-draining soils)
*efficiency is encouraged = drip irrigation
*irrigation water from Murray-Darling basin (started to run low in drought)
*Adelaide Hills or Margaret River store winter rainwater in dams until needed in growing season
*McLaren Vale and Coonawarra use underground water sources
*McLaren Vale = sustainable water resource: recycled wastewater from suburbs of southern Adelaide
Canopy Systems
*Scott-Henry and Smart-Dyson (divided systems) used on newly planted vineyards to control vigor
*old vines naturally combat high vigor (Shiraz and Grenache in South Australia)
Mechanical Harvesting
common: plantings widely spaced and most vineyards on flat or gently sloping land
*labor costs high + remote vineyards = mechanization as solution
*delivers fruit to cool winery faster
*easier to harvest at night
*optimum ripeness in very narrow window (harvesting must be as quick and efficient as possible)
**some hand-harvesting for premium wines
1. limits grape-splitting and crushing
2. precise selection of fruit at harvest
3. maintain whole bunches (either for whole bunch pressing for white wines or whole bunch fermentation in reds)
Soil Salinity
soil becomes more saline
*salts deposited in irrigation water not washed away by enough rainfall
*saline water in deeper aquifers finds way to surface
**more difficult for vine to get water it needs: reduces vine growth, possible death
**particular problem for Chardonnay
solution = selection of suitable rootstocks and changing irrigation pattern to supply larger amounts of water at less frequent intervals
Bush Fires
hot, dry summers
*smoke that comes into contact with grapes = pungent, bitter taint in wine
Selected Rootstock
*insurance against phylloxera (not present in South Australia, Western Australia, Tasmania; present in parts of Victoria and New South Wales)
*combat acidity in soils
*combat salinity in soils
Humidity
Rare with exception of:
*Adelaide Hills
*southern Victoria
*Hunter Valley
*parts of Tasmania
**open canopies essential to maximize airflow
Sustainable WInegrowing Australia
national sustainability program
2020 - members own 25% of vineyard land in Australia; 25% of production
*climate is warm and dry, risk of rot and mildew low
Pests
Birds and kangaroos
*netting for birds
*no sustainable solution for kangaroos
Top Grape Varieties
- Shiraz
- Chardonnay
- Cab Sauv
- Merlot
- SB
- Pinot Gris
- Muscat Gordo Blanco
- Semillon
- Colombard
- PInot Noir
**black varieties = 54% of crush tonnage (2019)
Alternative Varieties
Mediterranean: Tempranillo, Sangiovese, Fiano, Assyrtiko
*suited to warm, dry regions
Australian Wine Research Institute
Adelaide
*highly trained viticulturists & winemakers
Evolving Style
late 20th century: full-bodied, ripe, fruit, red and white wines
*well-equipped wineries
*scientifically trained winemakers
*scrupulous hygiene
*use of new oak
*ripe, healthy grapes
evolution
*site selection
*vineyard management
*precise harvesting dates
Experimentation (winemaking)
white wine experimentation:
*ambient yeasts
*skin contact
*lees contact
*solids in fermentation
red wine experimentations:
*ambient yeasts
*whole bunch and stem inclusion
Screwcaps
enthusiastically adopted, even premium
Shiraz
flagship variety; hugely successful export
*25% of harvest fruit weight 2019
very adaptable; planted in most wine regions
*hotter regions (Barossa Valley and McLaren Vale) = full-body, high alcohol, high levels of soft tannins, pronounced dark fruit with earth and spice; leathery characteristics with age
*cooler regions (Yarra Valley and Grampians)
=less full bodied with medium alcohol, less intensely fruity with red and black cherry and distinct black pepper
**characteristics often combines in multi-regional blended wines
Shiraz Winemaking Choices
some very concentrated, very ripe examples from warm climate, trend now for less intense, more approachable styles
achieved by:
*reducing extraction
*whole bunch fermentation
*reducing levels of new oak (American oak was traditional, French oak increasingly used)
*open fermentation tanks with manual or mechanical push-downs for soft extraction of tannins
Shiraz blends
Rhone style GSM blends with Grenache, Shiraz, Mourvedre (Mataro)
Shiraz-Viognier blends
*premiem examples co-fermented as in Cote-Rotie
*inexpensive blended post-fermentation
Shiraz-Cab Sauv
*contributes softness and body to Cab Sauv (similar function to Merlot in Bordeaux)
Cabernet Sauvignon
single varietal and blends
*cooler and warmer climate
*higher acidity and tannins than Shiraz
ripe blackberry, black cherry; oak aging
Coonawarra - mint, eucalyptus
Margaret River - blended with Merlot, slightly riper with more subtle herbal notes
Merlot
single varietal and blending grape (with Cab Sauv)
*medium bodied with medium tannins, red fruit
*fuller bodied with ripe, black fruit
**better clones increasing quality
Pinot Noir
cool and moderate regions
*Yarra Valley
*Mornington Peninsula
*Tasmania
medium bodied, medium alcohol, medium to high acidity, cherry and strawberry
winemaking:
*whole bunch fermentation (aromas)
*cold maceration (enhance color and flavors)
*stem inclusion (influence tannic structure)
*French oak widespread, use of new oak reducing
Grenache
1% of total harvest weight 2019
recognition of quality as single varietal in old bush vines (formerly blended)
*McLaren Vale
*Eden Valley
*Barossa Valley
greater freshness with higher acidity, slightly lower alcohol, fresher red fruit
*proportion of whole bunch or stem inclusion to enhance aromatics and tannin structure
*old oak and/or large barrel size for maturation (small new barrels are overwhelming)
Chardonnay
most planted white; found in every region
*style evolved from ripe with overt oak to lean (achieved by picking earlier)
*inexpensive wines tank fermented, oak from chips, staves, or barrels no longer used for premium wines
*high quality - ambient yeasts, high level of solids in fermentation, barrel fermentation, lees aging and barrel maturation (French)
ripe fruit (citrus, peach), medium to medium (+) acidity, well-integrated oak, complexity, balance, texture
**sometimes blended with Semillon (Chardonnay contributes ripe fruit to blend)
Use of malolactic conversion in Chardonnay production
full, partial or none depends on climate and style sought
*warmer areas - blocked to retain acidity
*cooler areas - full/partial to reduce acidity, increase complexity, and body
Sauvignon Blanc
cooler climate = mid-priced
hotter climate = inexpensive wines (higher yields)
*less herbaceous than Marlborough
*Adelaide Hills - best example
-intense fruit (citrus to tropical); fermented in stainless; some lees contact or barrel fermentation in old oak to produce full body
*Margaret River - blended with Semillon for Bordeaux style blend
Pinot Gris
*picked early for neutral style associated with Veneto
*picked when ripe for fruitier, spicier, full-bodied style of Alsace (not as full-bodied as actual Alsatian Pinot Gris)
*Victoria, Mornington Peninsula, Tasmania
Semillon
single varietal and blended (SB, Chardonnay)
distinctive; neutral in youth, develops great aromatic complexity with bottle age
*Hunter Valley: low alcohol, high acidity, unoaked style
*Barossa Valley: fuller-bodied with higher alcohol and flavors from oak maturation (not as age-worthy)
modern style - pick fruit early
*lighter with little to no no oak
Semillon - Noble Rot
frequently affected on sites in Riverina in New South Wales
*complex, sweet wines
Riesling
cooler regions
*Clare Valley
*Eden Valley
*Great Southern
*Tasmania
*Canberra
mostly bone dry with high acidity; apple, lemon, grapefruit, lime, peach
*fermented stainless and bottles soon after to preserve vibrant fruit and floral aromas
*premium wines made from free-run juice only (higher in sugar and acidity, lower in phenolic compounds such as tannins)
*experimentation with pre-fermentation skin contact and lees aging to add texture and weight
Muscat Gordo Blanco (Muscat of Alexandria)
grown in hot inland regions of Riverland, Murray-Darling and Riverina
*cheap blending partner in still wines
*sparkling Moscato wines
Colombard
grown in hot, inland regions of Riverland, Murray-Darling and Riverina
*neutral, cheap blending partner
*plantings decreasing
GIs
1990’s: zones, regions, sub-regions
Zones = largest areas; no rules for shared geographic or climatic characteristics
*divided into smaller zones
*example: South Australia: Adelaide: Barossa, Mount Lofty Ranges, Fleurieu
Regions = 63 (smaller than zones)
*Coonawarra, Clare Valley, Margaret River
*must have consistent and distinct qualities
*must produce 500 tons grapes/year across at least 5 differently owned vineyards each at least 5 ha
*Tasmania = region (not zone)
Sub-regions = 14
*most notably in Hunter Valley and Great Southern
*areas with particular climates, topography, soils
GI labelling options
Eden Valley Riesling can be labelled as Eden Valley, Barossa, Adelaide, South Australia or South Eastern Australia
*use of zone usually reflects blending across multiple regions
Label Integrity Program (LIP)
1990
*GI, vintage, or grape on label = 85%
*multiple varieties - listed in descending order of contributions to blend
*ensure truthful labelling
South Eastern Australia Zone
Victoria, New South Wales, Tasmania, SE corner of South Australia, SE corner of Queensland
*created to allow blending of grapes across zone
*majority labelled as South Eastern Australia = inexpensive, high volume
Murray-Darling Basin
South Eastern Australia Zone
*400,000 square miles
*formed by Murray and Darling Rivers and tributaries
*three largest wine producing regions in area under vine and annual production
1. Riverland, Lower Murray Zone (along Murray River in South Australia); Australian Vintage
2. Murray-Darling, Big Rivers Zone (Victoria and New South Wales); Lindeman’s: part of Treasury Wine Estate
3. Riverina, Big Rivers Zone (on the Murrumbidgee River in New South Wales); Casella Family Brands (Yellow Tail) and De Bortoli
Murray-Darling Basin Climate
hot, continental
*rivers with slight cooling influence
Riverina
*125 miles inland: less hot b/c of maritime influence (no mountain between it and coast)
*Griffith - rainfall and humidity in autumn with morning mists but warm and sunny afternoons = botrytis (Semillon)
Riverland
*rain shadow of Great Dividing Range: rainfall very low 135mm during growing season
Murray-Darling Basin Soil
predominantly sandy soils (irrigation essential)
Murray Darling Basin Water Issues
sandy soil + droughts + falling river levels = irrigation necessary but expensive
increases in water prices + falling prices of grapes = some growers have gone out of business
Murray-Darling Basin Grapes
Shiraz and Chardonnay
Semillon - Riverina (Griffith, sweet, botrytised)
*medium bodied, high in alcohol, low in acidity, ripe fruit flavors
*producers may blend grapes from other regions to achieve more flavor, balance, complexity (increases price)
Higher quality wines produced from low-yielding vineyards and grapes suited to hot environment, labelled as individual region rather than zone:
*Shiraz, Chardonnay (low-yielding)
*Petit Verdot, Viognier, Vermentino, Nero d’Avola, Montepulciano (better-suited)
South Australia
largest wine producing state by volume: 50% of total weight of harvested fruit
*vineyards in SE corner close to coast
*varied climate, topography, and soil
example: Clare Valley Riesling and Adelaide Hills Sauvignon Blanc (fresh and light) vs. Barossa Valley concentrated and full-bodied reds
South Australia Zone
all vineyard area in state + part of South East Australia Zone
8 smaller zones: Barossa, Mount Lofty Ranges, Fleurieu, Limestone Coast
Lower Murray Zone contains Riverland region
*allows for blending across different regions; even expensive wines (Penfolds Grange) blend and label as South Australia
Barossa Zone
north of Adelaide
1. Barossa Valley - flat valley floor
2. Eden Valley - hills to the east
mostly black grapes, Shiraz dominant variety
*many producers blend Shiraz from Barossa Valley (warmer = intensity and body) with Eden Valley (cooler = higher acidity and elegance)
Barossa Valley
one of largest regions: +11,000 ha
40 miles inland from Adelaide
*protected plain: west = low hills, east = Eden Valley Region, south = steeper parts of Mount Lofty Ranges (Adelaide Hills)
producers: John Duvat, Glaetzer Wines
Barossa Valley Climate
sheltered = warm climate with hot, sunny summer days, but cooler nights
rainfall low during growing season (160mm)
*irrigation necessary
*disease pressure low
Barossa Valley Vineyards
on plain between 250-370m (ideal for ripe, full-bodied wine)
valley sides = slightly cooler (relatively fresher style)
*some producers blend from cooler and warmer sites
old vine Shiraz and Grenache (first planted 1840s, no phylloxera)
*low-yielding dry-farmed bush vines
*outstanding, complex wines
Barossa Valley Soil
north = ironstone layer (water-retaining properties)
*produces most age-worthy wines
Barossa Old Vine Charter
2009: record, preserve and promote old vines
*categories linked to vine age
*increasingly appear on labels
*large number of old vines lost during vine pull scheme in 1980s to address oversupply
Barossa Valley Shiraz
66% of harvested fruit weight 2019
full-bodied, high alcohol, high levels soft tannins, pronounced ripe (cooked, dried) black fruit; long aging potential: spicy, leathery aromas
*many aged new American, recently French
**earlier harvest = fresher, more elegant and structured style
Barossa Valley Cabernet Sauv
slightly cooler, higher sites
rich and ripe compared to Coonawarra or Margaret River (softer tannins, higher alcohol)
Barossa Valley White
9% of harvested fruit weight 2019
high quality Chardonnay: warm = full-bodied, ripe tropical fruit
distinctive Semillon: higher alcohol, lower acidity, more body than Hunter Valley
*premium wines fermented and aged in French oak; shift toward lighter, unoaked style
Eden Valley
rolling, exposed hills east of Barossa Valley (part of Mount Lofty Ranges)
*gradient steep enough to limit mechanization
*600 m (cooler)
producers: Henschke, Pewsey Vale
Eden Valley Climate
*230 mm rain in growing season (more than Barossa Valley)
*winds can affect flowering and ripening in exposed sites
**sheltered, drier and slightly warmer on valley sides
Eden Valley Soil
wide variety with good water-retaining properties
*dry farming much more common than in Barossa Valley
Eden Valley Riesling
most planted, +1/3
dry with high acidity and medium alcohol
*fermented in stainless to preserve pure citrus (lemon and lime) and floral aromas
*aging potential: honey, nuttiness, toast (premium examples bottle-aged before released)
Eden Valley Shiraz
compared to Barossa Valley: higher acidity, more structured tannins, lower alcohol
flavors between very ripe (warm) and peppery (cool)
*ripe, fresh plum and blackberry with sweet spice from oak
Mount Lofty Ranges Zone
east of Adelaide, surrounds Barossa Valley on three sides
- Adelaide Hills
- Clare Valley
Adelaide Hills
cool climate (too challenging for early settlers: pulled almost all vines by 1930s)
north = warmer = return to viticulture in 1970s, spread south to border with McLaren Vale
15 miles east of Adelaide
producers Shaw + Smith, Penfolds (source fruit from here and across South Australia)
Adelaide Hills Topography
valleys and steep hillsides
*vineyards 400-500m
*variety of aspects, topography, soil types
*mechanization restricted
**site selection is important:
low-altitude west facing slopes in north = warm enough for full-bodied reds (*low latitude = intense sunlight = riper fruit flavors)
high altitude in center = cooler, better for early ripening SB, Chardonnay, PN
Adelaide Hills Climate
cool to moderate maritime climate (temps vary with altitude and proximity to ocean)
*high diurnal range (acidity retention)
*rainfall 280-320mm, majority in winter and spring (disrupt fruit set)
*rainfall collected in dams for irrigation
*underground sources of water available too
*humidity levels high for Australia = risk of rot and fungal disease (most producers spray, trying to reduce)
Adelaide Hills Sub-regions
- Piccadilly Valley
- Lenswood