Alcohol Fermentation

Question 1

What 2 things are required for alcoholic fermentation?

Answer 1

Sugar & yeast

Question 2

What 4 things does alcoholic fermentation produce?

Answer 2

1. Alcohol
2. CO2
3. Heat
4. Flavour

Question 3

What 3 things would cause fermentation to stop naturally?

Answer 3

1. Sugar is gone
2. Yeast has no more nutrients available
3. Temperature is above 35c

Question 4

What 3 things can you do to stop fermentation manually?

Answer 4

1. Chill to <5c
2. Remove yeast via filtration
3. Kill yeast via SO2 or RCGM

Question 5

Which yeast strain is unreliable yet provides complex flavours?

Answer 5

Ambient

Question 6

What does cultured yeast provide with a wine?

Answer 6

Consistency

Question 7

What do low temps at fermentation provide?

Answer 7

Floral fruity flavours

Question 8

Why are higher temperatures needed to ferm red wine?

Answer 8

Extract colours & tannins