Friday, January 22, 2010
PRODUCTION PROCESS FO BRANDY
# The first step in making fine brandies is to allow the fruit juice (typically grape) to ferment. This usually means placing the juice, or must as it is known in the distilling trade, in a large vat at 68-77°F (20-25°C) and leaving it for five days. During this period, natural yeast present in the distillery environment will ferment the sugar present in the must into alcohol and carbon dioxide. The white wine grapes used for most fine brandy usually ferment to an alcohol content of around 10%.
# Fine brandies are always made in small batches using pot stills. A pot still is simply a large pot, usually made out of copper, with a bulbous top.
# The pot still is heated to the point where the fermented liquid reaches the boiling point of alcohol. The alcohol vapors, which contain a large amount of water vapor, rise in the still into the bulbous top.
# The vapors are funneled from the pot still through a bent pipe to a condenser where the vapors are chilled, condensing the vapors back to a liquid with a much higher alcohol content. The purpose of the bulbous top and bent pipe is to allow undesirable compounds to condense and fall back into the still. Thus, these elements do not end up in the final product.
# Most fine brandy makers double distill their brandy, meaning they concentrate the alcohol twice. It takes about 9 gal (34 1) of wine to make I gal (3.8 1) of brandy. After the first distillation, which takes about eight hours, 3,500 gal (13,249 1) of wine have been converted to about 1,200 gal (4,542 1) of concentrated liquid (not yet brandy) with an alcohol content of 26-32%. The French limit the second distillation (la bonne chauffe) to batches of 660 gal (2,498 1). The product of the second distillation has an alcohol content of around 72%. The higher the alcohol content the more neutral (tasteless) the brandy will be. The lower the alcohol content, the more of the underlying flavors will remain in the brandy, but there is a much greater chance that off flavors will also make their way into the final product.
# The brandy is not yet ready to drink after the second distillation. It must first be placed in oak casks and allowed to age, an important step in the production process. Most brandy consumed today, even fine brandy, is less than six years old. However, some fine brandies are more than 50 years old. As the brandy ages, it absorbs flavors from the oak while its own structure softens, becoming less astringent. Through evaporation, brandy will lose about 1% of its alcohol per year for the first 50 years or so it is "on oak."
# Fine brandy can be ready for bottling after two years, some after six years, and some not for decades. Some French cognacs are alleged to be from the time of Napoleon. However, these claims are unlikely to be true. A ploy used by the cognac makers is to continually remove 90% of the cognac from an old barrel and then refill it with younger brandy. It does not take many repetitions of this tactic to dilute any trace of the Napoleonic-age brandy.
# Fine brandies are usually blended from many different barrels over a number of vintages. Some cognacs can contain brandy from up to a 100 different barrels. Because most brandies have not spent 50 years in the barrel, which would naturally reduce their alcohol contents to the traditional 40%, the blends are diluted with distilled water until they reach the proper alcohol content. Sugar, to simulate age in young brandies, is added along with a little caramel to obtain a uniform color consistency across the entire production run
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