WSET Chapter 2 Flashcards

1
Q

What are the four stages of making alcohol?

A

selecting raw material
fermentation
distillation
post-distillation operations

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2
Q

Spirits can be made from anything that contain

A

carbohydrates

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3
Q

Alcoholic fermentation starts when

A

yeast is added to a sugary liquid

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4
Q

The yeast eats the sugar and creates

A

alcohols (notably ethanol)
congeners
CO2

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5
Q

Congeners are

A

flavors

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6
Q

The result of fermentation is an alcohol with what percentage

A

10%

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7
Q

Distillation starts when

A

the alcoholic liquid is heated and turns into vapors

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8
Q

A common level of concentration takes the alcoholic level from 10% to

A

75%

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9
Q

Distillation is also used to

A

select and isolate congeners

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10
Q

Raw materials provide a distiller with what two things?

A

carbohydrates that feed yeast during fermentation

provide distillers with a distinct set of flavors

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11
Q

Grapes and sugar cane provide yeast with

A

sugar to feed on

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12
Q

Grains and agave have stores of

A

complex carbohydrates that need to be converted into sugars before fermentation can begin

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13
Q

Fermentation starts when

A

the distiller adds yeast to the sugary liquid

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14
Q

The liquid produced by fermentation is mostly made up of

A

water and alcohols

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15
Q

When does fermentation end?

A

When all of the sugars are converted to alcohol

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16
Q

What are esters

A

congeners formed during fermentation that have a fruity smell

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17
Q

Why do distillers use certain types of yeast?

A

To make the final product consistent and contain the correct congeners

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18
Q

What is the aim of distillation?

A

To produce a product that can be put on sale

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19
Q

Ethanol boils at a ______ temperature than

A

water

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20
Q

On a pot still, what does the pot do?

A

Holds the liquid that is going to be distilled

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21
Q

The swan neck connects the

A

pot and still head

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22
Q

The lyne arm connects the

A

still head to the condenser

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23
Q

What does the condenser do?

A

converts vapor back into a liquid

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24
Q

What is the most common type of condenser?

A

shell and tube

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25
In a shell and tube condenser, vapor enters through the top and comes in contact with
a coolant, typically cold water
26
Pot still distillation is a
batch process
27
In Pot still distillation a liquid has to be distilled
at least twice
28
What is the goal of the first pot still distillation?
To remove water from the alcoholic liquid
29
What is the liquid and ABV called after the first distillation?
low wines 25-30%
30
What is the aim of the second pot still distillation?
TO create a liquid the distiller can put on sale
31
Why is the heads and tales added to the next batch of low wines?
Because they contain a lot of ethanol and positive congeners
32
What is the hottest part of the column still?
the base
33
In a column still, where does distillation take place?
On each plate of the still
34
In a column still there is a constant rising of
ethanol and water flowing down
35
In a column still what ABV can the alcohol reach?
96% (not achievable by pot still)
36
In a column still the most volatile congeners
will reach the top of the still and be taken off as the heads
37
The least volatile congeners will reach their
highest level of concentration near the bottom of the still and be taken off as the tails
38
If the heart is drawn off near the middle of the column still what is its ABV
75%
39
What types of alcohols are drawn off near the middle of the column still
Armagnac bourbon rhum agricole
40
In the USA, a neutral spirit must be distilled to
95%
41
In the EU a neutral spirit must be distilled to
96%
42
What is a neutral spirit
when it rises near the top of a column still and has very few congeners remaining
43
What is the aim of post distillation choices?
color, aroma, sweetness and alcohol strength
44
What is the order of post distillation
maturation adding other flavors blending finishing
45
How can oak affect the character of a spirit?
Add color and congeners oxygen and time concentration remove harshness
46
What is the part of the barrel that evaporates
the angels share
47
In a barrel, flavor and color come from the
wood
48
In a barrel, harshness is removed by
the char of the barrrel
49
What concentrates the liquid in a barrel?
evaporation of water and alcohol
50
Inert vessels are made up of
stainless steel or glass
51
Spirits stored in inert vessels are said to be
uncaged
52
If kept in an inert vessel for a short amount of time,
the liquid doesn't change much
53
After a number of months in an inert vessel,
spirits become smoother and more mouth filling
54
What is a demijohn
glass vessel cognac is poured into after oak aging
55
What is the purpose of a demijohn
stop further oxidation and concentration
56
What is the aim of blending?
consistency and complexity
57
Blending for consistency is especially important for
spirits aged in oak
58
What are some ways to finish a liquid?
Adding water adding color adding sugar filtration
59
What is the legal minimum bottling strength?
40% USA | 37.5% EU
60
How is color added?
caramel
61
what is caramel?
tasteless foodgrade coloring
62
What is chillfiltration
when a distiller chills the liquid, it becomes hazy and then filters it