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Beverages
—
Alcoholic
19.
—
Barwood
acquires
a
dark wine
red
color
by
digest-
ing
in
alcohol.
20.
—
Brazil
wood
by
being~macerated
in
alcohol
or
by
boiling
for
%
hour,
produces
a
deep
red.
Spurious
Coloring
Matter.
—
The
following
coloring
mat-
ters give,
with
lead
acetate,
the
following
precipitates:
Pure
red
wine
gives
bluish
gray,
red
poppy
gives
dirty
gray,
elderberry
gives
dirty
green, bilberry gives
grayish
green,
privetberry
gives
green,
dwarf
elderberry
gives
bluish
gray
to
violet
in
the
fresh
berries
and
fine
green
in
the
fermented
extract,
mallow
flower
gives
dark
green,
logwood
gives
feeble
dark
blue,
Brazil
wood
gives
wine
red.
The
following
colors,
when
present,
give
the
following
precipitates
with
alum
and
ammonium
carbonate:
Pure
red
wine
gives
dirty
green,
red
poppy
gives
slate
gray,
elderberry
gives
bluish
gray,
bilberry
gives
bright
violet,
privetberry
gives
bright
green,
dwarf
elderberry
gives
bright
violet,
mallow
flower
gives
bluish
violet,
logwood
gives
dark
violet,
Brazil
wood
gives
carmine
red.
Decanting.
—
In
decanting
wine
care
must
be
taken not
to
shake
or
disturb
the
crust
when
moving
it
about
or
drawing
the
cork,
particularly
of
port
wine.
Never
de-
cant
wine
without
a
wine
strainer,
with
some
clean
fine
cambric
in
it,
to
prevent
the
crust
and
bits
of
cork
going
into
the
decanter.
In
decanting
port
wine
do
not
drain
it
too
close,
as
there
are generally
two-thirds
of
a
wine-
glassful
of
thick
dregs
in
each
bottle
which
ought
to
be
rejected.
In
white
wine
there
is
not
much
deposit,
but
it
should
nevertheless
be
poured
off
very
slowly,
the
bottle
being
raised
gradually.
Detannation
of
Wines.
—
1.
—
The
Formulary
recommends
the
following
method
for
removing
the
tannin
or
astringent
matter
from
sherry
wine:
Sherry,
7
pt.;
white
of egg,
1
fl.oz.;
alcohol,
1
pt.
Beat
the
white
of
egg
to
a
froth
and
mix
it
with
wine;
heat
to
about
170°
F.,
or
until
the
albumen
is
coagulated.
Then
cool,
add
the
alcohol
and
after
standing
a
few
hours
filter
clear
through
paper.
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