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
