White: Fermentation Vessels and Temperatures

Question 1

What is the fermentation temperature range for white wines?

Answer 1

15-25C

Question 2

Why are very cold temperatures used for some white wines?

Answer 2

• to retain volatile fruity and floral esters

Question 3

When might fermentation take place at higher temps?

Answer 3

• fermentation might be slightly warmer to promote yeast health and avoid the production of isoamyl acetate
• this may be done in conjunction with oak fermentation

Question 4

Give two examples of wines that might be fermented in SS tanks.

Answer 4

• fruity, floral wines, e.g. Sauv Blanc and Pinot Grigio

Question 5

What other materials might be used for fermentation of white wines at warmer temps?

Answer 5

• concrete
• old oak vats
• SS

Question 6

Which white grape varieties can suit being fermented in small oak barrels?

Answer 6

• Chardonnay
• Chenin Blanc

Question 7

What are the problems associated with fermentation in small oak barrels?

Answer 7

• small oak barrels are expensive
• filling and monitoring multiple small fermentations is labor intensive

Question 8

What effects can fermentation in small oak vessels have on a white wine?

Answer 8

• deeper color
• fuller body
• better integrated oak
• increased contact between wine and lees contributing to texture