Page:A Practical Treatise on Brewing (4th ed.).djvu/213

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ONE COPPER ONE BOILING.
197

When we have got all in copper, we find—

Forty-seven barrels at 22.3—or 1048. 1
From which deduct 10 per cent 109. 1
————
Divide by 26, strength required per barrel  26) 939. 0 (36
and 3 lbs. over.

We must now, as before, calculate what number of barrels must be turned out of the copper, so as that 36 may go into the gyle-tun. We use 2 lbs. of hops per barrel, 94 lbs., which will increase the quantity in the copper to 48½ barrels, and these will retain one barrel and at-half, or rather more, and about eight barrels will be evaporated on the coolers.

Wanted 36
Add for evaporation and condensation 8
Retained by hops 1 ½
——
Turn therefore out of copper 45 ½ brls.

We find, in the gyle-tun, thirty-six barrels one firkin, at 26 lbs. gravity, or nearly so, at least correct enough for practice.

Multiply the number of barrels in tun 36
By the gravity 26 .2
———
Div. by the number of quarters malt 10) 943 .2(94.3
gravity per quarter.

For process of fermentation, see page 184., "Second Ale."