Glossary entries

M

Malic acidity
One of the two principal organic acids of grapes and wines
Malolactic fermentation
A secondary, bacterial fermentation that takes place during or after alcoholic fermentation.
Mash
Crushed grapes, consisting of pulp, skins, seeds, and juice
Must
Grape juice
Must weight
density of grape juice, i.e., the weight of the must in relation to its volume