jcarson83 said:
3lbs of grain
.75gal strike water
1.125gal sparge water
1.575gal wort from partial mash. Assuming .3 gal absorbed by grain.
Seems like a waste of time for only 1.6 gallons.
First off you should up the sparge to 1 1/2 gallons (1/2 gallon per pound of grain). Second, for a partial mash I would use more grain if you can. What grains are you using in this beer? The whole purpose of a partial mash is to get fermentables to augment the extract. For this you will need to use some 2 row base malt. You will also add your specialty grain to the mash to extract the flavors and colors you want.
Look at this recipe that I used for the PM brew I did in my 3 gallon mash/ lauter tun.
I used 4 pounds of American 2-row which reduced the dried malt extract by 2 1/2 pounds. I used 1 1/2 gallons for the mash and 2 1/2 gallons for sparging. With grain absorption I ended up with about 3 1/2 gallons in the brew pot.
I hope this helps.
McDermit's Irish Ale
A ProMash Recipe Report
Recipe Specifics
----------------
Batch Size (Gal): 5.00 Wort Size (Gal): 5.00
Total Grain (Lbs): 8.13
Anticipated OG: 1.056 Plato: 13.81
Anticipated SRM: 14.9
Anticipated IBU: 42.6
Brewhouse Efficiency: 75 %
Wort Boil Time: 60 Minutes
Grain/Extract/Sugar
% Amount Name Origin Potential SRM
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49.2 4.00 lbs. American 2-row America 1.038 2
36.9 3.00 lbs. Generic DME - Light Generic 1.046 8
12.3 1.00 lbs. Crystal 55L Great Britian 1.034 55
1.5 0.13 lbs. Roasted Barley America 1.028 450
Potential represented as SG per pound per gallon.
Hops
Amount Name Form Alpha IBU Boil Time
-----------------------------------------------------------------------------
1.25 oz. Cascade Whole 5.80 31.5 60 min.
1.00 oz. Goldings - E.K. Whole 5.00 11.1 30 min.
Yeast
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WYeast 1968 London Extra Special Bitter