I am really excited to try this extract recipe and I happen to have some marris otter. Not quite enough of it though so I thought to use light dme too.
Extract 5 gallons
3.15 lb Marris otter LME
1 lb light dme
.8 lb crystal 60
.25 lb chocolate malt
.87 oz fuggles for 45 min
.87 oz fuggles for 15 min
Nottingham dry yeast
I plugged this into Qbrew and my og is 1.036 Bitterness 25 Color 18 degrees alc:3.5% I will look for british versions of the steeping grains, I think my lhbs carries uk crystal 70-80 and uk chocolate. if not then I'll grab generic stuff.
If this recipe doesn't look right let me know. I don't have beer smith and Qbrew is the only free calculator with a large database of malts. Salud!
I just brewed something similar. Looks find, though I highly recommend using the late extract method with this. If you steep your crystal/chocolate, and then put the DME in at the beginning of the boil, but wait until the last 15 minutes to put in your Maris Otter Extract, you will lessen scorching/caramelization of your wort, and get better hop utilization.
With the late addition of the LME you will probably only need .75oz of Fuggles for each addition rather than .87. Save some money and have a bit more even number .