Sparrowhawk Porter,
slightly modified (from Papazians recipe) because I could not come
up with a 4.5lb can of light or amber extract:
3.3 lbs John Bull Dark
3.3 lbs Bierkeller Amber
1.0 lbs dry plain malt extract
1.0 lbs black patent malt 325L
2.0 oz Northern Brewer pellets (boil)
1.0 oz Tettinanger pellets (finish)
TJOHB gives OG as 1.056 or so; I measured my OG as 1.042 after
correcting for temperature. My wort was well-mixed, and I graduated
my carboy so I know that I made 5 gallons +/- 2%.