Fining
/FY-ning/Clarifying wine by adding substances that bind with particles.
Full Definition
Fining uses additives that bind with suspended particles and fall to the bottom, clarifying wine. Traditional agents include egg whites (for tannin reduction), bentonite (proteins), isinglass (fish bladder), casein (milk protein), and gelatin. Vegan alternatives exist. Some winemakers skip fining for fuller texture.