i have found that a ratio of one quart of water/one pound of grain has been working out pretty nicely lately. for my five gallon cooler though, i am limited to recipes about 14 lbs. and under.
according to my buddy chris green, the difference in sugar yield between the us and uk malts is nominal, about .002 parts per pound per gallon. so, the argument whether domestic two row is better than uk two row is dead to me. the only reason to use one or the other is to stay within style guidelines.
i tried to calculate my efficiency yesterday, but the numbers where not doing what they were supposed to. maybe i had the wrong formula?
i multiplied the gravity(1.045) of my wort, multiplied it by the volume of wort collected in gallons(6.5) and divided by the pounds of grain used in the mash(13.5). i got this from john palmer but the answer doesnt make any sense.
(1.045)(6.5)/13.5= eff.
6.793/13.5= eff.
0.50= eff.
unless of course, one is just supposed to use the last two digits of their gravity reading, in which case the eff. would be 21.66, in which case my efficiency is dismal if i am striving for the magic number thirty. this means, again according to palmer, either A: i am lautering too fast, or B: i am not getting a good conversion due to ,"too course a grist, the wrong temperature, not enough time, or a pH factor, et cetera."
however, if this is the case, wouldnt i have a hell of a time hitting the target pre-boil and OG readings?
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