Brewing
http://byo.com/recipe/552.html but changed up some of the ingredients because I'm crazy like that.
A little shuked on this one section:
Heat 1.5 gal. water to 160° F. Mix in pale and crystal malts and oats. Hold at 150° F for 75 min. Sprinkle roasted barley and smoked malt on top of mash, then sparge with 2.5 gal. of 168° F water. Take the first 2 qt. of run-off and boil in a wide, flat pan for 20 min. or until caramelized (nearly burnt is fine).
Where do you think the 2 quarts comes from? The runnings or the sparge water? This should be a pole.
When you sparge with the 2.5 gallons, collect the first 2 quarts that come through the grains.At least that's how I take it to mean. When you sparge, you just aren't dumping the whole 2.5 gallons on top of the grains at once. It's kind of a trickle down kind of thing. You pour some in, let it start to drain, and then pour some more in. I think you'll want to have continuous flow, but the output should be slow, I'm guessing. Never done a true partial mash before, so this is all speculation and guessing on my part.
Not sure of your experience, but here's what I'm thinking, as far as how it is done.
Heat the 1.5 gallons to 160 degrees. Toss in teh pale and crystal and oats. Drop the temp down to 150 degrees for 75 min. After the 75 min., pour out everything into a strainer or something similar. Then, take the 2.5 gallons of 168 degree water and slowly pour over the grains (after sprinkling the roasted barley and smoked malt on the stuff in the strainer.) Take the first 2 quarts of what comes out, through the strainer, and do what the instructions say. The rest of the 2.5 gallons goes into your boiling pot, with all the other stuff.
Someone correct me if I am wrong in my assumptions here.