Parti-Gyle

[DavidHatton]

You can still treat the two runnings differently during the boil. For instance, if you bittered the second runnings of 1.030 to 40 IBU and the first runnings of 1.070 to 20 IBU you could get 5 very different beers out of them :

40 IBU 1.030 (100:0 second:first)
38 IBU 1.034 (90:10)
30 IBU 1.050 (50:50)
22 IBU 1.066 (10:90)
20 IBU 1.070 (0:100)

In reality you'd probably only make the middle three, but it gives you an idea of the maths.

Fuller's complicate it by combining the contents of two mash tuns before the boil on their full-length brews and since they're held up as the most common example of partigyling it's not surprising you got mixed up. And they don't use invert on their main partigyle these days (although they used to).


@DavidHatton - the second page of that HBT thread has what's claimed to be a pretty close approximation of ESB in homebrew form. You need to be careful with your yeast choices - either harvest from bottles of 1845 or Lancer, or Imperial A09 Pub is meant to be pretty close to how the real Fuller's yeast tastes (unlike WLP002 and 1968 which only USians could claim taste like Fuller's).

Cheers, plan was to harvest 1845 4 bottles worth and build it up to split between the fermentations, won't be doing it for a few months yet as I have 2 other large beers planned.

 

[Hew's Brews]

... interview with John Keeling former Headbrewer, and they apparently do two running and three boils, but blend the three worts to get ESB, London Pride & Chiswick Bitter,

That's interesting. Do you have a link to the interview please?

Ignore me. I should have read futher into this thread.