Hi All
Last week brewed Northern Brewer Dead ringer IPA. post boil was 1.054 at 67degrees and should have been approx 1.064. here is the process.This was my 5th biab ,also did the sixth it come out just fine.
12 lb/ 5.44 kilograms and started with 10 gallon/37 liter of water. strike water temp 165f/75c add grain 162F/67C 90 min mash, temp at 45 min 155F/68C,and stir,90 min temp 152F/67C. Then 90 min boil,remove from heat let cool about 1 hr seal kettle with plastic wrap let cool till morning. pulled sample from kettle 1.052 not right.Transfer from kettle to bucket had 5.25 gallon/19.8 liter of wort and just over 1 gallon/4 liter of muck left in bottom of kettle. I think I had a brain fart on mash temp! So where did I go wrong?I hope this is enough info. Any and all advice will be helpful. Thanks and Brew Often Ron Herndon
Post #2 made 11 years ago
First thing to understand is that their 1.064 is based on their equipment and process. Your brewday is going to be different than theirs and the results would be very different.
Without knowing much about the recipe or your equipment; I would say that the loss of temperature over the course of the mash is a concern.
This may be a single batch blip or a sign of some problem with your brews. A single off brew is not enough to know for sure.
Without knowing much about the recipe or your equipment; I would say that the loss of temperature over the course of the mash is a concern.
This may be a single batch blip or a sign of some problem with your brews. A single off brew is not enough to know for sure.
Some people are like slinkies. Not good for much, but bring a smile to your face when pushed down the stairs.
Weehoosebrewing.ga
Weehoosebrewing.ga
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Post #3 made 11 years ago
Quite a few problems here Ron. It's one of these many situations where the BIABacus will save you a world of grief. It seems confusing at first but it's not that hard and would have prevented...
1. You would have received a warning not to measure your gravity sample at 67C.
2. In a few seconds, I was able to determine that your kettle efficiency was about 77% which is almost 10% less than what the BIABacus predicts. But, there is still no way that 5.4 kgs of grain will give you that much of a 1.064 gravity beer. When they say "yields 19 litres or 5 gallons" they mean the Volume of Ambient Wort, not the Volume into Fermentor". So you used too much water to start with.
3. The BIABacus also would have told you the correct temperature to strike at. 75C is way too high to achieve a mash temp of 67C so it is likely that your mash was way too hot and this was most likely the reason for your poor kettle efficiency.
Before your next brew, allow several days for us to get things scaled for you properly in this thread.
Apart from the mash temp, the main worry was the poor terminology used by Northern Brewer on "yield". Have a read of Clear Brewing Terminology and make sure we get you set up properly before your next brew.
PP
1. You would have received a warning not to measure your gravity sample at 67C.
2. In a few seconds, I was able to determine that your kettle efficiency was about 77% which is almost 10% less than what the BIABacus predicts. But, there is still no way that 5.4 kgs of grain will give you that much of a 1.064 gravity beer. When they say "yields 19 litres or 5 gallons" they mean the Volume of Ambient Wort, not the Volume into Fermentor". So you used too much water to start with.
3. The BIABacus also would have told you the correct temperature to strike at. 75C is way too high to achieve a mash temp of 67C so it is likely that your mash was way too hot and this was most likely the reason for your poor kettle efficiency.
Before your next brew, allow several days for us to get things scaled for you properly in this thread.
Apart from the mash temp, the main worry was the poor terminology used by Northern Brewer on "yield". Have a read of Clear Brewing Terminology and make sure we get you set up properly before your next brew.
PP
Last edited by PistolPatch on 01 Jun 2014, 11:04, edited 1 time in total.
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Post #4 made 11 years ago
Hi All
Thanks for the info. OG was done at 67f/19.5c, I see that was the one I did not convert.
Let me see if I can wrap my peanut brain around this says yields 19 liters/5 gallons, that is what I should have in kettle after 90 min boil? not what goes into fermenter? so with the muck on bottom I only have 4 gallon/15 liters of wort into fermenter am I correct so far? I thought the deal was to have the 5 gallon/ 19 liter wort minus muck in kettle to transfer when done. If that is not the case where, when to add the 1 gallon/4 liter to make the 5 gallon /19 liter? if this is the case the I had way to much water to start as you said. Just trying to learn the biab way. I love brewing this way Thanks Ron
Thanks for the info. OG was done at 67f/19.5c, I see that was the one I did not convert.
Let me see if I can wrap my peanut brain around this says yields 19 liters/5 gallons, that is what I should have in kettle after 90 min boil? not what goes into fermenter? so with the muck on bottom I only have 4 gallon/15 liters of wort into fermenter am I correct so far? I thought the deal was to have the 5 gallon/ 19 liter wort minus muck in kettle to transfer when done. If that is not the case where, when to add the 1 gallon/4 liter to make the 5 gallon /19 liter? if this is the case the I had way to much water to start as you said. Just trying to learn the biab way. I love brewing this way Thanks Ron
Post #5 made 11 years ago
Looks like PP thought you meant 67C so all is good there.
You are somewhat on the right track Ron but make sure you read the beginning of the links provided above by PP as well as any stickied threads in this forum that contain the word, "integrity." Link and link.
Your post above indicates that you are still missing several major points and a generous offer that Lumpy and PP were trying to make to you and/or offer you. It's really important to slow down and do some reading and re-reading when on this site
.
Before replying next, make sure you have read what has been asked in this post and prior posts. After that, indicate which points need more explanation and/or just follow the advice already given.
Slowing down in the right areas can really speed speed you up.
Nuff
You are somewhat on the right track Ron but make sure you read the beginning of the links provided above by PP as well as any stickied threads in this forum that contain the word, "integrity." Link and link.
Your post above indicates that you are still missing several major points and a generous offer that Lumpy and PP were trying to make to you and/or offer you. It's really important to slow down and do some reading and re-reading when on this site
.Before replying next, make sure you have read what has been asked in this post and prior posts. After that, indicate which points need more explanation and/or just follow the advice already given.
Slowing down in the right areas can really speed speed you up.
Nuff
Last edited by Nuff on 01 Jun 2014, 22:00, edited 1 time in total.
Post #6 made 11 years ago
If anyone did things perfectly right from the get go, then they are an anamoly. Don't get discouraged by people pointing out potential mistakes, we just want to help. Did you stir your mash before measuring temperature? If not, then you may not have lost as much tempertature as you thought. If I go by my kettle thermometer, then I lose 5F in 15 minutes. A quick stir shows that I haven't lost a single degree yet. I also measure with another thermometer to try to verify the results. I wrap my kettle and lid with Reflectix, but a spare blanket or sleeping bag will probably work just as well. Maybe even better. I have done a total of 6 batches that had 12lbs of grain. My gravities ranged from 1.057 to 1.064. Earlier batches saw higher effiency because I just dumped everything into the fermenter. Later on I began to leave the trub behind in the kettle.
Hope you have had better luck in your more recent batches.
Hope you have had better luck in your more recent batches.
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