The Theory and Practice of BrewingCombrune, Michael
Science
The Theory and Practice of Brewing
Combrune, Michael
Brewing
Fire impressed on malt, either through air or water, it is true, has
similar effects as to preservation, but the fact is not the same as
to taste: the sweet, the burnt flavor, or the proportion of both, the
malt originally had, sensibly appear in the extracts; but water heated
to excess will not, in extracting pale malt, communicate to the worts
an empyreumatic taste; whether this proceeds from some acid parts,
still residing in the heated waters, which might help the attenuated
oils to tend towards a sweet, or from other reasons, is not easily
determinable; certain it is, the foundation of taste in malt liquors is
in the malt itself.
The basis of all wines is a sweet: this circumstance for brewing beers
agreeable to the palate must always be attended to. Next to this, it
is required that the liquor should possess all the strength, it can
fittingly be made susceptible of. Pale malt, as it retains the whole
virtue of the grain, yields the strongest beers. The finest oils being
fittest for fermentation, malt dried by fierce heats, in a great
measure loses these, and what remains are not only coarser oils, less
miscible with water, but such as bring with them the impressed taste of
fire.
To answer the purposes of taste, strength, and preservation, from what
has been said it appears, that the extracting water must be of a heat
superior to that which dried the malt; no other rule appears to direct
in this, than to make choice of malt of such dryness, the delicacy of
which has not been removed by fire, and such as will, at the same time,
admit of a sufficient number of superior degrees of heat, to extract
all its fermentable parts; that is (see page 124) malt whose dryness is
nearly 19 degrees less than the mean of the drying and extracting heats
applicable to the purpose intended.
As 119 degrees, the first heat forming pale malt, and at which it
possesses the whole of its sweetness and virtues, may be said to be
the lowest degree of dryness in the grain to form keeping beers with,
so 138 degrees, above which the native whiteness of the grain is so
subdued, as to remain but in a very small proportion, is the highest
dried malt fit to be used for any purpose; from these premises the
following table is formed, to shew the degree of dryness of malt, where
taste and strength are equally consulted, to brew drinks capable of
keeping themselves sound a long time, at any medium required.
The proper choice of malt I thought necessary to point out, previous
to entering more at large on the subject of extraction. This table,
it must be observed, is in no wise directive for brewing common small
beer, soon to be expended, that liquor depending on many other
circumstances, of which notice will be taken immediately under that
head.
A TABLE, _shewing the proper dryness of Malt, applicable
to the mean of the drying and extracting heats under
which keeping malt liquors should be formed_.
Public-domain text, read in full here on John Shaqi.
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