Purpose Of Pressing

Question 1

White

Answer 1

Pressing is immediate after crushing

Question 2

Red

Answer 2

Pressing occurs after fermentation and draining. This is to increase skin contact between the juice and grapes leaching color, tanning and other phenolics from the skin.

Question 3

Effects of pressing on Red

Answer 3

60-70% of free run juice occurs at the crushing phase. The balance 30-40% has a higher pH, lower titratable acidity, potentially higher volatile acidity and phenolics.

Question 4

Effects of pressure in pressing

Answer 4

Increase pressure and tearing of skin will produce more astringent, bitter wine