Please note that my efficiency with this recipe is 72.5%. You may need to adjust ingredients for your system to hit the target OG and IBUs.
Amount Item Type % or IBU
6 lbs Maris Otter (Crisp) (4.0 SRM) Grain 85.71 %
8.0 oz Caramel/Crystal Malt -120L (120.0 SRM) Grain 7.14 %
4.0 oz Barley, Flaked (1.7 SRM) Grain 3.57 %
4.0 oz Special Roast (Briess) (50.0 SRM) Grain 3.57 %
I am not a huge fan of hop flavor in my bitters, preferring brews where the malt flavor shines, so the only late hop addition is small and at 20 minutes. Enough flavor will be pulled from that to let you know there are hops in the beer, but that's about it.
1.25 oz Goldings, East Kent [6.00 %] (60 min) Hops 30.1 IBU
0.25 oz Goldings, East Kent [6.00 %] (20 min) Hops 3.6 IBU
0.50 items Campden Tablet (Mash 60.0 min) Misc
1.00 items Whirlfloc Tablet (Boil 15.0 min) Misc
I use the Campden to neutralize chloramine in my tap water. You may not need to use this.
Mash in with 7 quarts of water (1 quart per lb of grain) for a target temp of 153 degrees. Rest for 60 minutes, then sparge to collect 6.8 gallons. With my system I get about 1 gallon of boil-off over an hour, however you may need to adjust the recipe to match my numbers.
Overall it's a good light but malty session beer without too much bitterness or strong hop character. Its best enjoyed around 55 degrees. From a visual standpoint the flaked barley produces some chill haze at lower temps, and the flavor is also muted if drank colder than cellar temps. I force carbonate to around 1.9 volumes CO2 (12 PSI at 55 degrees).