WSET Diploma_Vodka Flashcards
Vodka should be distilled to a minimum strength of what % abv in the EU and also Canada/USA?
EU= 96% abv
What is the minimum bottling strength in the USA/Canada?
40% abv
US regulations (1982) state that a vodka is…
a neutral spirit so distilled or so treated after distillation with charcoal or other materials as to e without distinctive character, aroma, taste or color.
Highest quality vodkas are made from….
Grain (wheat, barley, rye) or potato
Lower quality vodkas are made from…
Maize or molasses (makes an overly sweet vodka)
What are the qualities of a good cereal for CONVERSION?
High in starch and low in protein.
Explain the steps of conversion.
Ground cereal is mixed with with water and cooked under pressure to hydrolyse the starch. Some malted barley may be added during cooking to help liquefaction of after cooking for its enzyme conversion.
How long is fermentation and what is the resulting % abv?
40 hours (relatively quick)
What accounts for the variation in fermentations % abv.?
The difference in yield between base ingredients.
What are distillers looking to NOT produce during fermentation?
Congeners.
How can the distiller help reduce the risk of bacterial contamination during fermentation?
By using de-ionized water.
What are some options to purify production water?
De-ionize, demineralize and soften.
What type of stills are used for vodka production?
Mostly multiple column stills but some kettle stills are used (kettle one).
What is the one thing all vodka producers are trying to eliminate during distillation?
Conginers.
‘Purity’ can be thought of as the effective removal of what alcohols?
Methanol, Butanol, Propanol.