's Merlot Racking or soutirage is a traditional method in wine production of moving wine from one barrel to another using gravity rather than a pump. The process is repeated when the casks are moved to the second-year cellar. Soutirage was developed in the
Bordeaux region of France in the 19th century at a time when there was no
electricity to power pumps. Many estates such in Bordeaux and some estates in
Pomerol and
St. Emilion still employ this labor-intensive method. During aging, the wine is decanted several times from barrel to barrel. This process softens
tannins, clarifies the wine and enhances aromatic qualities. According to
Oz Clarke, "traditionally the wine is 'racked' or drawn from barrel or tank to another empty one on a number of occasions (called soutirage). This helps clarify and freshen the wine by removing the fine lees or sediment which forms and provides a tiny amount of oxygen to help the aging process. The wine may also be 'fined' (
collage) using
egg white or other materials to settle out particles in suspension which are then removed through further racking."
Egg white is often applied to each barrel during the process. ==Equipment==