Vity / Vini Flashcards
What causes the famous “petrol” smell in Riesling?
TDN
What are échalas? And where are can you find them?
It’s a vine support or training system, used on steep slopes (Cote rotie) so they form this tipee like structure
What are Colluvial soils?
•Rain driven slope wash
“Con lluvia”
What are alluvial soils?
•river sediment soils
What’s causes cork taint?
The chief cause of cork taint is the presence of the chemical compounds 2,4,6-trichloroanisole (TCA) or 2,4,6-tribromoanisole (TBA) in the wine, which in many cases will have been transferred from the cork, but which also can have been transferred through the cork rather than from it
What’s the purpose of ‘blue fining’?
To remove excess iron and copper by adding potassium ferrocyanide
To prevent haziness, solid deposits, copper aids oxidation, copper is toxic
Little iron should remain, otherwise it’s very possible there might be some potassium ferrocyanide which can convert to cyanide
What’s the París basin?
A ring of chalk and limestone, which has a particular effect in England, Sussex and Hampshire
What’s the purpose of dropping a penny in a glass of wines that smells like drains or bad eggs??
The penny, which should be made of bronze will react with the acids of the wine to get rid of the hydrogen sulphide
Excess hydrogen sulphide is caused by reduction of sulphur dioxide - under extreme anaerobic winemaking.
What’s the range of alcohol for flor yeast to be able to develope and survive?
14.5-16
What are the 2 types of plastics for wine bottles?
PVC -these are used in producer countries like France, they’re cheap and lightweight but have a very poor oxygen barrier which results on a short shelf life
PET- widely used for beer and soft drinks, better oxygen barrier and longer shelf life
Name all the different types of containers for wine
Plastic, PVC PET
MCB (measuring container bottles)
Aluminum cans 9mnts shelf life, impermeable to light and gasses, strong and lightweight
Risk of egg smell because sulphur dioxide becomes hydrogen sulphide aluminium and acids
BIB (Bag in box)
Invented in Australia perfected by penfolds, never intended for cheap wine, available from 2 to 20 ltrs popular in Australia and Sweden
Cardboard bricks
The only truly aseptic type of packaging
Name all the types of closures for wine containers
-Natural Cork
-Technical Corks
•colmated cork - a natural cork coated w cork and latex dust
•Agglomerate cork -cheapest one made of pieces of cork glued together
•Diam -the most technical, purified cork made of only the soft pieces, suberin, these are washed w carbon dioxide to eliminate TCA
•One plus One - compose of two natural end caps with agglomerate in the middle
•Synthetic “corks” -moulded these are hard very difficult to remove and Extruded, plastic pipe filled w foam more flexible neocork and nomacork are examples of extruded
•Aluminium screwcaps -AKA ROTE in Australia, ROPP in UK, Stelvin some risk of hydrogen sulphide.
•Glass stoppers (vinolok) these are heavy and expensive as a high end natural cork
•Zork
Describe the tribaie system
Used to sort out the grapes, specially useful when machine harvested, invented in BDO by Philippe bardet,
- vibrating belt excluded small green grapes
- rotating drum, damaged grapes stick to the sides, whiles the good ones fall into the bottom filled w fresh must
- ripe grapes sink, unripe grapes float
Describe lutte raisonnee
Using as few chemicals as possible but as many as necessary
What does the phrase ‘chicken and hen’ mean on winemaking?
Small and big berries in the same bunch of grapes
What’s a “samsonite” clone??
It’s a vine cutting brought illegally, usually tucked in a suitcase to avoid the lengthy and complicated process of importation and quarantine
What’s the purpose of mustard as a cover crop in vineyards?
To control nematodes or desease carrying insects
What’s the PLC In Frances wine law?
It allows the yield in any given year to be raised by as much as 20 % or even more over the basic year
What’s a feuillette? And where can you find it?
It’s a barrel size used in Chablis. It is 132 liters.
Compared to the Burgundian piece of 228 liters
Or the BDO barrique 225 liters
Name 2 German wine vessels (winemaking)
Mosel’s Fuder 1k liters
Rhines Stück 1200 liters
What’s a hogshead?
Australian 300 liter barrel
What’s dynamization?
A special stirring process to activate the different preparations in biodynamics
What’s the typical amount of TDE in a wine?
Total Dry Extract, typically between 16-20 grams per litre
Indicates how “pure” the wine is -no addition of things like water, etc.
How many cases of wine in a standard wine barrel?
25 cases
What are zocos?
It’s the planting style of the vines in Lazarote, (Malvasia), man made depressions with mini walls around them and covered w little black pebbles to attract moisture and water the vines
What is NDVI?
Normalized difference vegetation index -used to measure or get an idea of the vigor of a vineyard
Infrared imaging
What’s LAI?
Leaf area index -can be obtained with a NDVI, -ratio of leaf area to soil surface
What is Flurbereinigung?
Parcel cleaning -used in many of the river facing vineyards in Germany, basically the flurbereinigung commission gets growers together to agree on a scheme to te shape the land. They lay water mains for irrigation, build roads and walls and even regrade and realign the land in order to make more accessible and workable to reduce the labor needed and maximize their efficiency to increase their final profit.
