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EZBREW.GLS
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1993-08-31
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Want more definitions?
The registered version of EZBREW contains many more
of the most common (and not so common) terms that
you might encounter while home brewing!
~
A.A.U.
Stands for Alpha Acid Units. AAU represents the
percentage (weight) of alpha acids (α-Acids) in the
variety of hops you are using in your batch. Thus,
an AAU of 8.5 means that 8.5% of the total weight of
the hops is made up of the α-acids.
AAU varies by year and variety, so when you obtain
your hops, make sure that your supplier furnishes
the α-Acid levels for the hops you purchase.
~
ALE
A top fermented beer (using ale yeast at
temperatures between 60 - 70 °F [15.5 - 21° C]),
typically of higher alcohol content, higher hops
rates, and correspondingly higher bitterness. Beers
in this class include bitters, mild ales, pale ales,
brown ales, stouts, barley wines, and porters.
~
BARREL
Industry standard unit of measure, = 31 U.S. gallons.
~
BODY
The way the beer "feels" in your mouth, with
"thicker" beers having more body.
~
BOUQUET
The aroma characteristic of beer most commonly
associated with the hops used in making the brew.
~
CORNELIUS KEG
Stainless steel containers used by the soft drink
industry to store syrup and carbonated water in for
fountain drinks. Conveniently built in 2.5, 3, 4,
and 5 gallon sizes, they make the perfect draught
beer system for the home brewer, as they can be
filled with brew, and pressurized to assure a
smooth flow of the beer.
~
DIACETYL
A product of the fermentation process which imparts
a buttery or butterscotch component to your brew.
Desirable in some but not all beers.
~
ESTERS
Some brews have a "fruity" characteristic, described
in terms of apples, bananas, grapefruit,
strawberries, and other fruits. The esters
responsible for the aroma are produced by the yeast
during it's normal respiration, and the effect
varies with the strain of yeast being used. So
experiment!
~
FERMENTATION
The anaerobic process by which yeast consumes sugar
and produces carbon dioxide and alcohol.
~
GRITS
Normally refers to raw corn (maize) or rice, that is
first processed, and then used in mashing.
~
HYDROMETER
Clear glass instrument that is used to measure the
specific gravity of the wort relative to pure water.
Most hydrometers are calibrated at 60° F (15.5° C),
and thus readings made in worts that are at other
temperatures need to be corrected to 60° F. (EZBREW
has a function to do this for you.)
~
INVERT SUGAR
By boiling sugar, water, and citric acid (lemon
juice) invert sugar is produced, which is directly
fermentable by yeast without the need for additional
enzymatic conversion.
~
KILNING
The process by which germinated grain is dried and
roasted. This process involves careful temperature
and humidity control. The final temperatures will
determine the nature of the malt produced, from the
light (lower temperatures) through caramel (crystal)
malts, finally reaching the black patent malt
(highest kilning temperatures). Kilning determines
the amount of starches that remain in the malt, with
higher temperatures burning off more of the starches,
resulting in a malt that contributes less to the
alcohol content of the brew.
~
LENGTH
Refers to the volume of the wort.
~
MAIZE
Another name for corn.
~
ORIGINAL GRAVITY
The specific gravity of the wort just prior to
pitching the yeast (also called starting gravity).
~
PASTEURIZING
Holding the temperature of the beer at 140° F (60° C)
for a period of time long enough so that all bacteria
are killed.
~
RESPIRATION
The process by which yeast uses oxygen and sugar to
produce carbon dioxide and water, thus building up
energy for the reproductive and fermentation phases
of it's life cycle.
~
SACCHARIFICATION
The process of breaking long, unfermentable dextrins
(starch) into shorter, fermentable sugars, primarily
by beta-amylase enzymes.
~
TRUB
(Pronounced "troob") Sediment or "dregs" in the
fermentation vessel.
~
TURBID
Cloudy, containing a haze.
~
ULLAGE
The airspace between a liquid and the container it is
in.
~
WORT
(Pronounced "wert") The sweet malt solution that is
sparged from the mashed grain just prior to adding
(pitching) the yeast.
~
YEAST
A single celled organism that consumes sugar and in
the process of living, produces carbon dioxide gas
and alcohol. Can be purchased in dry (powder) or wet
forms, in a variety of strains. Don't use "bread
yeast" however, unless you are experimenting to
achieve a special effect in your brew, or the recipe
specifically calls for baker's yeast.
~