Summer Lightning

This is a clone of Hopback Brewery's (Wiltshire, UK) Summer Lightning.

Brewer:	Graeme Coates		Email:	graeme@chromosphere.co.uk
URL:	http://www.chromosphere.co.uk
Beer:	Summer Lightning		Style:	English Strong (Extra Special) Bitter
Type:	All grain		Size:	25 liters
Color:	5 HCU (~4 SRM)		Bitterness:	41 IBU
OG:	1.050		FG:	1.011
Alcohol:	5.0% v/v (3.9% w/w)
Grain:	5kg 500g British pale
Mash:	71% efficiency
	Mash at 66°C.
Boil:	minutes	SG 1.039	32 liters
	Irish Moss at 15min
Hops:	44g Challenger (5.6% AA, 90 min.) 26g Kent Goldings (3.9% AA, 90 min.) 15g Kent Goldings (3.9% AA, 15 min.) 10g Kent Goldings (aroma)
Yeast:	Recultured the yeast from two bottles of Summer Lightning (it is the primary strain).
Log:	Ferment at 18°C (keep less than 19-20°C or the yeast produces funky flavours). The yeast is a top cropper and a little rousing helps it - you'll need to skim the yeasty head off the top prior to racking (much like US-05/WLP001)
Carbonation:	Light carbonation required.
Tasting:	Entered into a competition where the judges comments included that it could do with a little more bitterness for the sweetness of the beer (so increase bittering hops slightly if you want). Also, I mashed at 64C - the finish was a bit short so a slightly higher temp for some more dextrins to increase mouthfeel.

Recipe posted 11/30/08.