You boiled off almost a third of your wort in 90 minutes? Might need to turn down your boil?
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You boiled off almost a third of your wort in 90 minutes? Might need to turn down your boil?
PistolPatch
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Yeah Tom it's about 19%. I've never been able to reduce it either.
From the figures so far, it's showing that the bigger the surface area of the pot, the higher the evaporation rate. My pot is 50cm diameter whereas a keggle is about 33 (I think?) and urns even less.
Managed to get my pre and post boil figures pretty close this time
From the figures so far, it's showing that the bigger the surface area of the pot, the higher the evaporation rate. My pot is 50cm diameter whereas a keggle is about 33 (I think?) and urns even less.
Managed to get my pre and post boil figures pretty close this time
Yeah Tom it's about 19%. I've never been able to reduce it either.
From the figures so far, it's showing that the bigger the surface area of the pot, the higher the evaporation rate. My pot is 50cm diameter whereas a keggle is about 33 (I think?) and urns even less.
Managed to get my pre and post boil figures pretty close this time
I would guess your aroma and flavor additions suffer from such a high boil off. Have you noticed any difference in your brews to others that brew the same recipe? Do you make any changes?
Have you ever thought of putting a lid on part way to decrease the boil off? I know DMS and all that but you are on the high end of the boil off rate.
PistolPatch
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Tom, I'll post an answer now in the main BIAB thread as your question might interest a few people.
Cheers,
Pat
Rodolphe01
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This morning I did my second BIAB, a summer ale, my first was a hefeweizen which I am already drinking. In doing BIAB I only wanted to use equipment I already had so I am restricted to max ~3kg of grain therefore I do BIAB partials. My largest pot is a 15L stanless one that works on my induction cooktop so it boils very rapidly and temperature adjustments are a breeze with the indirect heat. I don't drink a great deal so will probably just do smaller batches and drop the malt extract all together in the future. Pic attached because everyone loves pics.
Good one Rudi, do you use malt extracts to 'top up' the partial brew or do you use kits? When I was doing partials - depending on the style of course, I found that some kits are brilliant for partials. For a lager I would use a Coopers Canadian Blonde or Morgans Canadian Light, go light on the bittering hops as there are already a few in the tin (not too many ) and add a fair whack of aroma hops such as Saaz and I would get a brew almost indistinguishable from an all grain lager because the light goop in the Canadians doesn't fight with the grain malt flavours and aromas. Didn't have a lot of luck with Uk bitters (which is why I went AG) but another brilliant usage of partials is to do a mash plus dark malts and roast barley, about 3k, and add a can of Coopers Stout. That's how I still make all my stouts :icon_cheers:
Edit: were you at Half fix's case swap down the road from you off Appleby a few weeks ago? Can't remember whether I met you or not. Still can't remember whether I met a lot of people there :blink: :huh:
) and add a fair whack of aroma hops such as Saaz and I would get a brew almost indistinguishable from an all grain lager because the light goop in the Canadians doesn't fight with the grain malt flavours and aromas. Didn't have a lot of luck with Uk bitters (which is why I went AG) but another brilliant usage of partials is to do a mash plus dark malts and roast barley, about 3k, and add a can of Coopers Stout. That's how I still make all my stouts :icon_cheers:Edit: were you at Half fix's case swap down the road from you off Appleby a few weeks ago? Can't remember whether I met you or not. Still can't remember whether I met a lot of people there :blink: :huh:
Rodolphe01
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Yea basically top up with extract so I can get 22-23l into the fermenter (at a decent gravity).
For my hefe I used the coopers wheat kit because that saved me having to do a bittering addition basically, and just added a wee bit of tettnanger for aroma. For the summer ale I did today I used 1kg of wheat malt extract to top up the gravity, 22l in the fermenter @ ~1.045.
In the past when making beers (I have been doing kits and bits for a while) i'd chose kits based on their colour and IBU for the style I wanted, regardless of what style was written on the can, kits like the coopers lager and cerveza have given me plenty of mileage It probably works out a fly shit cheaper than using un-hopped extract and bittering it myself. I will probably avoid kits and liquid extracts purely for the kit twang and stuff people talk about, my pallete is too dull to perceive this though There are definately a few kit and bit beers I'll still make though, nice and quick to put down... The BIAB this morning was painful with 2 kids and the wife under my feet!
As for the case swap, nah I wasn't there, didn't even know about it. I might have spoken to you at the last BABBs meeting I went to about a month ago.
For my hefe I used the coopers wheat kit because that saved me having to do a bittering addition basically, and just added a wee bit of tettnanger for aroma. For the summer ale I did today I used 1kg of wheat malt extract to top up the gravity, 22l in the fermenter @ ~1.045.
In the past when making beers (I have been doing kits and bits for a while) i'd chose kits based on their colour and IBU for the style I wanted, regardless of what style was written on the can, kits like the coopers lager and cerveza have given me plenty of mileage
It probably works out a fly shit cheaper than using un-hopped extract and bittering it myself. I will probably avoid kits and liquid extracts purely for the kit twang and stuff people talk about, my pallete is too dull to perceive this though There are definately a few kit and bit beers I'll still make though, nice and quick to put down... The BIAB this morning was painful with 2 kids and the wife under my feet!As for the case swap, nah I wasn't there, didn't even know about it. I might have spoken to you at the last BABBs meeting I went to about a month ago.
Here is a brew I did last week
The following figures are based on this number of brews (number):1
Desired Batch Size* (lts):25
Vessel Type (Keggle or xlt Pot) 50 ltr converted Keg
Length of Boil (mins): 90
Grain Bill (kgs):7000g
Starting Volume of Water (lts):35
Volume at Boil Start (lts):30.5
Specific Gravity Reading at Start of Boil (hydrometer sample cooled to 15 or 20 degrees): 1.052
Plato Gravity Reading at Start of Boil (refractometer sample cooled to 20 degrees):
Volume at End of Boil (lts - deduct 4% if measured at 100 degrees):
Specific Gravity at End of Boil (hydrometer sample cooled to 15 or 20 degrees):1.060
Plato Gravity Reading at End of Boil (refractometer sample cooled to 20 degrees):
Are you chilling? (Yes/No): YES
Trub Left in Kettle (lts):4
Volume into Cube (lts):
Volume into Fermenter (lts):25
Specific Gravity Reading into Fermenter (hydrometer sample at 15 or 20 degrees): 1.060
Plato Gravity Reading into Fermenter (refractometer sample at 20 degrees):
FINAL Specific Gravity Reading after Fermentation (hydrometer sample at 15 or 20 degrees): 1012
FINAL Plato Gravity Reading after Fermentation (refractometer sample at 20 degrees):
Fermenter Trub (lts):1
Resulting Batch Size (lts):25
Added 4 ltrs to grains, after sqeezing bag,then added back to pre-boil volume
Cheers,
Rocket
The following figures are based on this number of brews (number):1
Desired Batch Size* (lts):25
Vessel Type (Keggle or xlt Pot) 50 ltr converted Keg
Length of Boil (mins): 90
Grain Bill (kgs):7000g
Starting Volume of Water (lts):35
Volume at Boil Start (lts):30.5
Specific Gravity Reading at Start of Boil (hydrometer sample cooled to 15 or 20 degrees): 1.052
Plato Gravity Reading at Start of Boil (refractometer sample cooled to 20 degrees):
Volume at End of Boil (lts - deduct 4% if measured at 100 degrees):
Specific Gravity at End of Boil (hydrometer sample cooled to 15 or 20 degrees):1.060
Plato Gravity Reading at End of Boil (refractometer sample cooled to 20 degrees):
Are you chilling? (Yes/No): YES
Trub Left in Kettle (lts):4
Volume into Cube (lts):
Volume into Fermenter (lts):25
Specific Gravity Reading into Fermenter (hydrometer sample at 15 or 20 degrees): 1.060
Plato Gravity Reading into Fermenter (refractometer sample at 20 degrees):
FINAL Specific Gravity Reading after Fermentation (hydrometer sample at 15 or 20 degrees): 1012
FINAL Plato Gravity Reading after Fermentation (refractometer sample at 20 degrees):
Fermenter Trub (lts):1
Resulting Batch Size (lts):25
Added 4 ltrs to grains, after sqeezing bag,then added back to pre-boil volume
Cheers,
Rocket
No better place to post my small victory for BIAB.
Entered my American style Wit in our county fair and out of 4 beers I got first and best of show. I guess it is better then second.
Best thing is no stuck sparge. I brewed a similar recipe Sunday and with 1 pound of oatmeal, 4.5 pounds of malt, and 3.5 pounds of raw wheat. It drained very easy. My gravity was 2 points higher then expected. Looking for a nice easy drinker at about 3.5%. Kind of a White Ordinary Bitter. The only big mistake was I should have used Maris Otter instead of plain 2 row.
Entered my American style Wit in our county fair and out of 4 beers I got first and best of show. I guess it is better then second.
Best thing is no stuck sparge. I brewed a similar recipe Sunday and with 1 pound of oatmeal, 4.5 pounds of malt, and 3.5 pounds of raw wheat. It drained very easy. My gravity was 2 points higher then expected. Looking for a nice easy drinker at about 3.5%. Kind of a White Ordinary Bitter. The only big mistake was I should have used Maris Otter instead of plain 2 row.
PistolPatch
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rudi_101: Excuse the late congratulations but :super: Am I going to meet you when I fly over for the QLD Xmas Case Swap? It's a heap of fun so get there if you possibly can. Lots of top brewers there too.
rocket58: Thanks for the figs! I will throw them in along with several others that have come in including 4 of mine done for Katie's Australia's Brew Day from Hell. Will send you the update soon and a volume calculator.*
katzke: You're the man! Good on ya!
* I tried some high tech stuff on these brews like ball-valves, glycol and plate chillers. I hadn't had time to set them up in advance and so had my most comical brew weekend ever. The only good news is that from the recording of all our figures in this thread, I was able to predict the volumes and gravities for the brews (both double and single batches) to pretty much spot on. That was the only thing that went right - lol!
rocket58: Thanks for the figs! I will throw them in along with several others that have come in including 4 of mine done for Katie's Australia's Brew Day from Hell
. Will send you the update soon and a volume calculator.*katzke: You're the man! Good on ya!
* I tried some high tech stuff on these brews like ball-valves, glycol and plate chillers. I hadn't had time to set them up in advance and so had my most comical brew weekend ever. The only good news is that from the recording of all our figures in this thread, I was able to predict the volumes and gravities for the brews (both double and single batches) to pretty much spot on. That was the only thing that went right - lol!
reviled
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Only cos ive been too slack to update it
Which I now have, 46 BIAB's, average of 20 litres per batch = 920 litres brewed!!
Also - have been asked to do a presentation on the BIAB process at the Auckland guild of homebrewers
Im looking forward to it! Hopefully convert a few of the old kit brewers there Only cos ive been too slack to update it
Which I now have, 46 BIAB's, average of 20 litres per batch = 920 litres brewed!!
Also - have been asked to do a presentation on the BIAB process at the Auckland guild of homebrewers
ahhhhh! good luck bro!
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