Muntons | Home Beer Making
Old Ale - Rich and warming with an unmistakable "aged" flavour - this beer should ideally be served in nips. OG 1060° to 1064°.
Typical analyses when canned
Colour (EBC Units) 27 - 33
Bitterness (EBU's) 45 - 55
Solids (by refractometer) 80% - 82%
Acidity (as lactic) 1% max
pH 5 - 6
Free Amino Nitrogen 0.15%
TBH, I would just sub in some regular light DME (or LME, if you prefer). You are going to be getting a lot of the colour from the grains you are steeping. Maybe add an extra 0.5 to 1 oz of Northern brewer (at the start of the boil).
Here is my version, (all grain) based of Clone brews and using the Wyeast old ale blend.