Wines coming from the many crus are brought in wintertime to distilleries and
are distilled separately in order to keep the characteristics and qualities of
each one. In this phase is held in consideration every difference: every
peculiarity must be protected from uniformity, a characteristic that will be
delegated to blending.
The process of distillation takes place between September 1st and March
31st, a period which has not changed in the course of time, by using
stills known as Charentais and whose origin is dated back to the
fifteenth century. Stills are strictly made of copper which, besides ensuring a
good resistance and a high thermal conductivity, prevent the development of
acid fats. This characteristic prevents the risk of spoiling the brandy with
unpleasing smells and flavors. The boiler of stills are onion shaped and has on
the top a dome which collects and directs the steam. From the top of the dome
there is a pipe, called swan neck, connected to a serpentine that from the
top of the boiler submerges in a refrigerating liquid and therefore arrives of
a container in which the distilled liquid is collected. The process consists in
two ebullitions called chauffes. This process of double ebullition,
allows the production of brandies with particular finesse and purity, a
distillation technique which has never changed during the course of time.
The distillation process begins by filling the boiler with wine. The wine is
then heated at a moderate temperature, for about 8-10 hours, and produces an
alcoholic steam which raises and pass through the circuit of serpentine. In
this phase the steam cools down and condense and reach the end of the circuit
where the liquid is collected in a container. From the first phase is obtained
a milky liquid, thick, with little aromas and a low percentage of alcohol,
called bruillis. At the end of the first ebullition the process is
repeated by using the raw brandy. The second ebullition, called la
bonne chauffe, is the most important one and lasts about 12 hours. It is a
very delicate process which requires a great mastery of the operators as they
will have to eliminate the head and the tail, that is the first and the last
part of the liquid, while keeping the central part only, the famous heart
of the brandy. The product obtained from the first distillation has a pretty
low percentage of alcohol, whereas the second one gives a brandy with about
70% of alcohol. The end of the two distillation processes just represents the
first phase of the production: the distilled brandy will require two more
phases in order to become cognac which will be finally commercialized.
The next phase is aging. The brandy is put in 350 liters casks (about
92 Gallons) made of oak from the forests of Limousin and Tronçais. This
particular wood confer to cognac an amber color while slowly passing its aromas
to the brandy as well as tannins and lignin. The porosity of the wood also
favors the evaporation of a pretty high quantity of cognac of about hundreds of
casks per year: the so called part des anges, that is the part of
angels. Aging is a phase that can last from a minimum of 30 months up to tens
of years. The maximum aging for a cognac is of 60 years, beyond this period it
gets a bitter and rough character. The duration of aging also depends on the
type of wine used for distillation as well as the decisions of producers and
climate.
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Cognac is one of the most famous brandies in
the world | |
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The production of cognac is made by little steps, all of them very important,
and each one contributes to the final quality. Neither extra old cognacs are
left in the cask more than the time needed: they are poured in demijohns,
called bonbonnes, and kept in special rooms called
paradis. The cellar is rigorously and continuously controlled. A
room having the right percentage of humidity allows the right releasing of
water and alcohol from casks: a condition that must be constant over time and
for all the duration of aging. Cellars where casks of cognac are held have gray
colored walls: this color is not chosen by men, it is because of the presence
of a microscopic mould called Torula Compniacensis, which develops in
these particular conditions and gets nourishment from the alcohol evaporating
from casks.
The last phase of the production, following aging, is blending, the so called
assemblage. This delicate operation is done by the master of cellar
(maitre de chai), who decides the duration of aging of every single
cognac. This phase consists in the dilution and the blending of cognacs from
different vintages and vineyards in order to get the very best quality: a
homogeneous and harmonious product. Traditionally, most of distilleries make
use of brandies older than what required by law in order to obtain a
particularly favorable assemblage or to keep the quality of the product
high and constant. Assemblage also consists in diluting cognac with
spring water, or distilled water, in order to lower the percentage of alcohol
down to about 40%. Cognac is finally bottled and released on the market
therefore making it available in shops all over the world.
The quality of a cognac is also determined by its age, which is not expressed
in years, but with proper abbreviations and terms. The age of the younger
cognac used for the blend determines the denomination of aging. Moreover, as
opposed to wine, the age of cognac is determined according to the time spent in
a cask, whereas the time spent in a bottle does not affect the aging of brandy.
The definitions used to indicate the age of a cognac are the following:
- If the younger brandy used in the blend has up to four years and a half
of age, the cognac is defined as VS (Very Superior) or
Trois Etoiles (three stars)
- If the younger brandy has an age between four years and a half and six
years and a half, the cognac is defined as VSOP (Very Superior
Old Pale), VO (Very Old) or Réserve
- If the younger brandy is older than six years and a half, the cognac is
defined as Vieille Reserve (Old Reserve), Grande
Réserve (Gran Reserve), Royal, Vieux (Old),
XO (Extra Old), Napoléon. Generally speaking, these
are cognac with excellent qualities
- The terms Hors d'Age and Paradis can be used in case
the younger brandy is older than six years and a half, however they are used
for cognacs more than 50 years old
In case at least 50% of the brandies used in the blend come from the areas of
Grande Champagne and Petite Champagne, the cognac can be defined as
Fine Champagne.
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