Malolactic Fermentation is a secondary fermentation in the winemaking process which converts harsh malic acid (think bitter green apples) into softer lactic acid (think cream).
To use Chardonnay as an example; putting the wine through Malolactic Fermentation will convert a wine with tart Granny Smith apple acidity into a wine with softer, creamy and buttery flavors.
The vast majority of red wines and a large number of whites go through Malolactic Fermentation to enhance their stability, complexity and to a certain degree their palatability. There are still plenty of delicious wines that don’t go through Malo (if you want to sound cool with a hint of pretentious, just call it “Malo”).
Sondra Barrett
Thanks for such a simple explanation of malo – you might want to see how this can be illustrated by wine and the molecules. http://bit.ly/uCGOHe
Cheers!
Kris Chislett
Wow! Thanks for that! Those are some pretty crazy photos!