Sweet: Stopping Fermentation

Question 1

How does stopping the fermentation result in a wine with RS?

Answer 1

• the fermentation is halted before the yeast can consume all of the sugar

Question 2

What are the advantages of halting the fermentation to produce wines with residual sugar?

Answer 2

• the winemaker has control over the level of sugar in the final wine
• the process is quick
• the process is inexpensive
• the process is low-risk

Question 3

What methods can be used to halt fermentation?

Answer 3

• chilling to below 10C and adding a large does of SO2
• fortification with alcohol to kill the yeast to produce a fortified wine