Lactic Acid
Lactic Acid
Lactic acid is a soft organic acid produced during malolactic fermentation (MLF) of wines, when bacteria (Oenococcus oeni) converts harsh malic acid into lactic acid. It smoothens the wine’s total acidity, increases pH and adds creamy, buttery or velvety textures and flavors to wine. Lactic acid can also be added directly to must or wine to act as an acidifier and adjust acidity. It is very important for red wines and white wines like Chardonnay.
See Also
Amphora
Amphora is a traditional clay or terracotta vessel used for fermenting, aging and storing wine. These vessels are neutral and porous, allowing micro oxygenation without adding oak flavors.
Maceration
Maceration in wine is the process of soaking crushed grape skins, seeds and stems in the juice (must) to extract color, tannins and aroma compounds.
Hybrid
Hybrid varieties are created by crossing two or more different grapevine species to get a final product that offers resistance to cold, diseases and humidity, making them ideal for tough climates.
Irrigation
Irrigation is the artificial application of water to vineyards to provide the necessary 25-35 inches of annual water in dry climates.
Harvest
The harvest marks the end of the vine growing cycle, typically occuring between August and October in the Northern hemisphere. It is the stage where ripe grapes are picked from the vineyard to begin winemaking.
Lees
Lees are the dead yeast cells, grape seeds and skins left over in the fermentation tank after fermentation. There are two types of lees; gross lees and fine lees.
Aging
Aging is a post fermentation process where wine rests in barrels (mainly oak) or bottles to undergo chemical changes that improves stability, develops complex flavors and clarifies the liquid.
Crush
The Crush refers to the period in late summer or fall when harvested grapes are mechanically broken to rupture their skins and release the juice, initiating the winemaking process.