the vineyard and winemaking Flashcards
(155 cards)
steps to make high volume, inexpensive wine
- Destem, crush, no skin contact, and immediate pressing
- carefull handling of grapes to prevent oxidation
- monitoring of Sulphite lvls to prevent oxidation
- Juice will be highly clarified through filter or centrifuge to retain fruity flavours
- fermentation in temperature controlled stainless steel tanks using cultured yeast strains
- avoid MLF, no lees contact or stirring
- possible acidification in warm regions
- short stabilization in inert vessels, fining and sterile filering before bottling
- blending
options to make premium white wine in winery
- sorting of grapes to remove unhealthy grapes
- destem and crush with short skin contact at cool temp. (aromatic grapes)
- whole bunch fermentation (reduces risk of oxidation and gives more purity and delicacy)
- retain some solids in the juice after settling and fining to add complexity and texture (not for wines that show pure aromatic varietal character)
- use of new or old oak for fermentation/maturation
- mature the wine with fine lees to enhance
- blending
basic steps to make red wine
- crush grapes
- Alcoholic fermentation
- Drain Juice
- press
- Malolactic fermentation
- Packaging
basic steps to make white wine
- press grapes
- alcoholic fermentation
- rack off gross lees
- packaging
basic steps for making rosé with the maceration method
- crush grapes
- maceration (may extend into fementation)
- pressing
- alcohol fermentation (if already started continued off skins
- rack off gross lees
- packaging
basic steps to make rosé with the direct pressing method
- crush grapes
- press grapes
- alcoholic fermentation
- rack off gross lees
- packaging
common practices for premium wines
- low yields
- more manual vineyard management techniques
- harvested by hand
- grape selection
- possible pre-fermentation maceration
- gentle methods of clarification (cold settling or racking)
- if oaked, its usually from barrels
- post bottling maturation might be longer depending on style
common practices for high volume wines
- high yields
- vineyard tasks by machine
- machine harvested
- no grape selection
- no pre fermentation maceration
- centrifuge is used to clarify
- oak will be from chips or staves
- post fermentation maturation is kept to a minimum
how does sunlight impact a vineyard
- Essential for photosynthesis
- Impacts the growing season of the vine
- Steep slopes benefit more from the effect of sunlight
How does Fog impact a vineyard
- Can cool an area in warmer climates
- Misty/foggy mornings can be good for the development of noble rot, as long as the afternoons warm up sufficiently to dry the grapes.
how does a body of water impact a vineyard in a cool climate
- they moderate temperatures at the beginning and end of the growing season, lowering continentality = temperatures rise and lower more slowly
- flowing water creates airmovement which protects against frost
- vineyards close to a body of water benefit from the reflected sunlight in the vineyard aiding ripening
how do slopes impact a vineyard in a cool climate
- cool and moderate regions: benefit from more direct sunlight
- good drainage
- Frost protection, cool air is heavier and sinks, so on a slope it will not settle until it hits a depression
how does soil impact a vineyard in a cool climate
- drainage
- Heats up quicker after the winter as it does not have a high water content
- Absorbs heat which is radiated back
factors determining price of a wine
- Grape growing: land might be expensive depending on the prestige of the region. manually managed is more expensive then mechanically, and not all sites are suited for mechanical managing.
- Winemaking: initial cost to settle a winery is high, and wine if often stored for ageing so there is no immediate return on investment.
- packaging: having to bottle and then ship? or maybe ship in bulk? expense of branding and design
- transport, distribution: sell locally only? make a good deal with a reliable businesspartner if you want to sell internationally
- taxes
- retailers: places that sell wine also need to make a profit
- markey forces: what does a consumer want to pay for a wine? a winemaker needs to be aware of current markettrends
what is a maritime climate
Warm summers, mild winters, rainfall all year round
which factors affect heat
- latitude
- altitude
- ocean currents
- fog
- soil
- aspect
what is continentality
temperature difference between coldest and warmest month
what can influence a region’s continentality? and why?
large bodies of water heat up and cool down more slowly than landmasses, in water they have a warming effect and in summer a cooling effect. these regions have a lower continentality and determines the length of the growing season
whats is diurnal range
difference between daytime and nighttime temperature
what can affect diurnal range? and why?
*proximity to seas/lakes/rivers can reduce diurnal range (softer nights and cooler days)
*lvl of cloud cover
(temperature drop faster on clear nights = increase and rise more slowly on cloudy days because the sun can not heat the ground directly= reduce
what are the natural factors influencing rioja wines
rioja is in the upper ebro, it is mainly a red grape region. it is in a valley of the ebro river and is locked within two mountain ranges creating a heat trap. the cantabrian mountains in the north moderates the warm continental climate with the cooling effect from the atlantic ocean while also protecting the region from the cold and rain from the atlantic. vineyards are planted on a high altitude between 500 and 800 metres (alavesa and alta). drought can be a problem in the rioja baja.
which grapes are used in red rioja wines
mainly Tempranillo, blended with:
garnacha: adds alcohol, body and red fruit
carinena/mazuelo: adds colour, acidity and tannin
graciano: adds tannin, acidity, black fruit
what are vigorous cap management techniques and why would a winemaker do this
- pumping over
- punching down
- rack and return
- to increase the skincontact during fermentation and to have more extraction from flavour, tannins and colour
what is white rioja, grape and styles
Viura is the main grape, traditionally aged long in american oak with golden colour and nutty flavours. Modern style is in inert vats stainless steel for fruity wines or fermented in barrels for a more rounder style