locost said:
Can the collective run through the theory behind formulating a sound British Bitter.
Tough question, because Bitter is an extremely broad style, with debatable sub-catergories. The upside of this, is that the breadth of style allows you to experiment quite a bit.
locost said:
I know Marris Otter is the preferred malt
Yes and no. My personal view is that it's not so much the barley variety, but more the quality of the maltings. Thomas Fawcett make a great ale malt using Maris Otter, but I reckon it's the process of floor malting that really adds to the character more than the MO. Powells in Melbourne also floor malt and they make very nice ale malt.
locost said:
keep the crystal below 5%
Yep. But you can play around with the types of crystal. I like to use between 2%-3% Wyermann CaraAroma, plus a little extra Fawcett's crystal. Some would say the use of a German malt is out of style, but I like the extra complexity from a darker crystal. Also it adds a very nice colour to the beer, but it ends up on the darker end of the spectrum.
locost said:
Are there any other parameters to keep in mind?
The obvious parameter in a Bitter is that the beer should be just that, bitter. Aim for a BU:GU of about 0.8 eg if your OG is 1.035 aim for about 28IBUs (28/35=0.8, or 35x0.8=28). I've made bitters at the low end of the IBU range and found them bland.
I personally only use Fuggle or Golding in my English ales, but the hops you use is a matter of preference. I like to use 50/50 Fuggle/Golding, with additions at 60/30/15/0. The flame out addition should be quite generous.
Many receipes use torrefied wheat, but I'd give it a miss. It adds nothing to the malt profile and the supposed benefits of head retention are not really an issue for Bitters.
If making an Ordinary Bitter, use a very flavourfull yeast and ferment at the top of the yeast's range to get extra flavour in the beer.
Don't bother with extended conditioning and drink them young and fresh.
There's loads more, but these are just a few of my personal expereinces.
Cheers
MAH