What is fining (collage)?

What is fining (collage)?

• A. The movement of wine from one vessel to another
• B. Cold stabilization
• C. Filtration by way of a fining agent to precipitate solids out of the wine, bentonite, casein, isinglass, gelatin, and egg white are commonly used.
• D. The maturation period

Answer: (C)

Fining is the practice of clarifying and stabilizing wine by adding a fining agent that binds with suspended particles, causing them to coagulate and settle so they can be removed. This helps make the wine clearer and can influence stability and flavor once those solids are taken out. Common agents include bentonite (a clay that adsorbs proteins), casein (milk protein for removing tannins and pigments), isinglass (fish gelatin), gelatin (animal collagen), and egg white. After the particles have been precipitated, the wine is typically racked or filtered to remove them. This is different from cold stabilization, which uses low temperatures to prevent tartrate crystals, and from aging, which is maturation, or simply moving wine between vessels.

Fining is the practice of clarifying and stabilizing wine by adding a fining agent that binds with suspended particles, causing them to coagulate and settle so they can be removed. This helps make the wine clearer and can influence stability and flavor once those solids are taken out. Common agents include bentonite (a clay that adsorbs proteins), casein (milk protein for removing tannins and pigments), isinglass (fish gelatin), gelatin (animal collagen), and egg white. After the particles have been precipitated, the wine is typically racked or filtered to remove them. This is different from cold stabilization, which uses low temperatures to prevent tartrate crystals, and from aging, which is maturation, or simply moving wine between vessels.