Chose Dave Line's London Pride recipe for my first all grain/biab. It said 3.5kg's of pale ale malt but in BeerSmith that come out at around OG 1.036 or something instead of the 1.042 in the book. I then added 500g and got that as my OG and thought nothing of it (book's a bit dated so trust BS more)
Anyway, after mashing in a standard plastic boiler without any insulation (just turned it on and off now and again) I then sparged a further 5+ liters to get the 20 liters needed for boiling.
Anyway, after it had all boiled and was topped up to 25 liters and chilled (after a day) I checked the OG and it's 1.041 now is that beginners luck or am I missing this whole efficiency thing? I think Beer Smith was set at a default efficiency value of 70% so can I then read that I get a 70% efficiency rate with my current method?
Is this good efficiancy for my first biab?
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RdeV
Re: Is this good efficiancy for my first biab?
Yep, sounds like about 70% efficiency to me. However, what makes you think its 25L in the FV? Have you measured it or are you trusting the FV graduations. If so, don't! Next time, check it, could be right but I wouldn't leave it to chance or the FV manufacturers- often they're out by quite a bit so its best to verify the volume marks.
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boingy
Re: Is this good efficiancy for my first biab?
Dave Line's recipes seem to have assumed high efficiency and also they tend to be a bit hop heavy. I've seen general advice to boost the fermentables by 20% and cut the hops by 20% but I think it is dependent on the recipe you choose. Maybe he had amazing efficiency or maybe the ingredients at the time were a bit different (or maybe his scales were inaccurate!).
Anyway, nice one. That's not a bad result for an uninsulated mash tun.
Anyway, nice one. That's not a bad result for an uninsulated mash tun.
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badgerdan
Re: Is this good efficiancy for my first biab?
Cheers guys. Yup i'm just using the graduations on the side of the fv-
I think i do remember something about doing that with Dave's recipes but I'd read that while I was extract brewing a while ago and had since forgotten.
I'd also forgotten to run the first few liters of wort through the grains before/while sparging so have quite a lot of crap in my fv now but I always use a secondary so hope I can get a lot of it gone by then, the London ESB 1968 wyeast is having a good time now I hear so I'll have to wait and see how this one turns out
I think i do remember something about doing that with Dave's recipes but I'd read that while I was extract brewing a while ago and had since forgotten.
I'd also forgotten to run the first few liters of wort through the grains before/while sparging so have quite a lot of crap in my fv now but I always use a secondary so hope I can get a lot of it gone by then, the London ESB 1968 wyeast is having a good time now I hear so I'll have to wait and see how this one turns out