Source: Rob Bradley (bradley@adx.adelphi.edu), HBD Issue #1098, 3/16/93
Strong ale @ 1072
Pale Ale @ 1046
Shandy @ 1043
by using, per US gallon of final yield for each of the three, 5 pounds UK 2-row malt and 2.2 US gallons of mash water.
As a variant, I scaled the recipe up to 2 gallons and collected and brewed the first runnings according to the posted recipe. I decided to sparge afterwards and collect what amounted to the second and third runnings together. Given the desirability of a 5-gallon batch size, I figured I'd add a little water and malt extract to the kettle to stretch the brew length up to 5 gallons. (No all-malt fixation here :-)
Summary: overall success!! As I suspected, I got more yield in the first runnings than predicted from Line's figures. And that was despite cutting the mash water down to 2 gallons. I compensated by adding a little more than a pound of dry malt extract.