The possibilities are endless. It is especially great cask-conditioned and/or dispensed via beer engine.
SEYMOUR BOG STANDARD BEST BITTER
6 US gallons = 5 Imperial gallons = 22.7 Liters
GRAINBILL
83% = 7.47 lbs = 3388 g, UK Pale Malt (Maris Otter, Golden Promise, Pauls Mild Malt, etc.)
10% = .9 lb = 408 g, UK Crystal Malt (light or dark, as you prefer)
2% = .18 lb = 82 g, UK Amber Malt
5% = .45 lb = 204 g, Molasses (or Treacle, Dark Invert Syrup, Brewers Caramel, Dark Brown Sugar, etc)
TOTAL: 9 lbs = 4.08 kg
MASH at 150°F/65.6°C for 60 min, optional: stir-in a pinch of Calcium Carbonate
SPARGE to collect 6.5 US gallons/5.4 Imperial gallons/24.6 L pre-boil
BOIL 60 min, add Molasses at this time, optional: a pinch of gypsum to make hops pop
HOPS
1.2 oz = 21 g, East Kent Goldings, First Wort Hops
.6 oz = 21 g, East Kent Goldings, 15 min remaining (add Irish Moss at this time as well)
YEAST
Ringwood Brewery dual-strain, or the complex, high-attenuating English ale yeast of your choice
STATS
OG: 1043
FG: 1010
ABV: 4.3%
IBU: 30
Colour: clear orange amber