Pomace

Pomace meaning in wine

Pomace refers to the solid residue that remains after grapes have been pressed during winemaking, consisting primarily of grape skins, seeds (pips), and stems. Also known as marc in French winemaking terminology, pomace represents approximately 20-25% of the original grape weight after juice extraction. The composition and handling of pomace varies significantly between red and white wine production. In red winemaking, pomace undergoes extended contact with the fermenting juice to extract color, tannins, and flavor compounds, typically for 5-30 days depending on the desired style. White wine pomace is usually separated immediately after pressing to prevent unwanted color and tannin extraction. Beyond its primary role in winemaking, pomace serves multiple secondary purposes: it can be distilled to produce grappa or other pomace brandies, composted as vineyard fertilizer, or processed into grape seed oil. The quality and characteristics of pomace directly influence the potential for these value-added products. Modern wineries increasingly view pomace as a valuable byproduct rather than waste, contributing to sustainable winemaking practices and circular economy principles in viticulture.