not sure where to post this but i am trying to input a recipe into the calculator
the recipe is
pale malt 4690 grams
crystal malt 460 grams
for a brew length of 25 litres at 75 % efficiency(according to the book) og 1046
my boiler is 70 litre stockpot 50 cm dia
when I input the information in the calculator it says my grain bill should be 6293 grams
Brew Length 25.00 lts How much beer you want to end up with.
Fermenter Trub* 2.00 lts Volume left in fermenter after kegging/bottling.
Volume into Fermenter 27.00 lts End of boil volume less kettle trub & buffer.
Kettle Trub & Buffer* 4.50 lts Grain & hop trub plus some breathing space!
End of Boil Efficiency* 75.00 % Derived from a collection of brewers' records.
End of Boil Gravity (OG) 1.046 Deg. Derived from your recipe or beer style.
End of Boil Volume 31.50 lts The first point at which OG can be established.
Boil Length 90 min 90 minutes recommended.
Diameter of Kettle 50.00 cms The widest diameter of your kettle.
Evaporation Per Hour* 8.40 lts/hr Stays fairly constant regardless of batch size.
Evaporation for this Brew 12.61 lts Derived from boil length & evaporation per hr.
Expected Start of Boil Gravity 1.033 Deg. Derived from grain bill and pre-boil volume.
Start of Boil Volume 44.11 lts End of boil volume plus evap, for this brew.
Grain Bill Required 6293 grams Grams of grain needed in this brew.
Grain Absorption* 3.95 lts How much liquid is retained in the spent grain.
Water Required is... 48.06 lts How much water you need for this brew.
Approximate Mash Volume 52.21 lts Approximate volume of your mash.
I have brewed this recipe in a 3 vessel setup and the evaporation figures are about right and I hit the og spot on so am I doing something wrong inputting the figures into the calculator
sorry if this post is not very clear just trying to get my head around the calculator
regards paul
Post #2 made 12 years ago
Hi Paul
I've just got in from work so I won't be able to get back to this till after dinner
I've done a quick calc and you look spot on for a EOBV of 31.5L @ 75% so I think the problem is with terminology. The recipe brewlength is End of Boil Volume. The calculator Brewlength is finished beer into packaging. Keep changing the Calculators brewlength figure until the EOBV is showing 25L then the numbers should fit. Note: there still may be a slight difference due to different extract potential values, The Calc uses 307/kg/L.
What book is the recipe from ??
Have a look and get back to me
Cheers
Yeasty
I've just got in from work so I won't be able to get back to this till after dinner
I've done a quick calc and you look spot on for a EOBV of 31.5L @ 75% so I think the problem is with terminology. The recipe brewlength is End of Boil Volume. The calculator Brewlength is finished beer into packaging. Keep changing the Calculators brewlength figure until the EOBV is showing 25L then the numbers should fit. Note: there still may be a slight difference due to different extract potential values, The Calc uses 307/kg/L.
What book is the recipe from ??
Have a look and get back to me
Cheers
Yeasty
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Post #3 made 12 years ago
thanks yeasty
the recipe is from g wheelers BYOBRA at home, youngs special bitter for 25 litres he states recipes are for 19,23,25 litres as these are common brew lengths for kegs/barrels and at 75% efficiency
and yes when I set brew length to 20 litres end of boil volume becomes 25 and grain bill is a little over 5 kilos (5035 grams original recipe 5150 grams ) so in the same ball park
regards Paul
the recipe is from g wheelers BYOBRA at home, youngs special bitter for 25 litres he states recipes are for 19,23,25 litres as these are common brew lengths for kegs/barrels and at 75% efficiency
and yes when I set brew length to 20 litres end of boil volume becomes 25 and grain bill is a little over 5 kilos (5035 grams original recipe 5150 grams ) so in the same ball park
regards Paul
Post #4 made 12 years ago
Hi Paul
I thought it was a GW recipe. Looks like you are on the right track . You should get better efficiency than 75% so you can up it a bit if you want. Around 79-83% is a good starting point.
The slight difference in grain bill is due to GW using an extract potential of 300/kg/L so it uses slightly more grain.
Have you seen the Biabacus in this thread Here it may look a bit of a beast at first but give it a shot with your recipe. Once you've studied it and got use to the layout it is a simple A to B process. The admin guys will value your feedback.
Yeasty
I thought it was a GW recipe. Looks like you are on the right track
. You should get better efficiency than 75% so you can up it a bit if you want. Around 79-83% is a good starting point.The slight difference in grain bill is due to GW using an extract potential of 300/kg/L so it uses slightly more grain.
Have you seen the Biabacus in this thread Here it may look a bit of a beast at first but give it a shot with your recipe. Once you've studied it and got use to the layout it is a simple A to B process. The admin guys will value your feedback.
Yeasty
Last edited by Yeasty on 09 Jan 2013, 01:55, edited 2 times in total.
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Post #5 made 12 years ago
thanks yeasty
I am planning to do a brew tomorrow ,I have never brewed BIAB but could give it a try as I have a voile curtain I could use.
It would be interesting to try a brew and compare with my 3 vessel results as I have brewed this recipe several times
I could use the 40 litre buffalo boiler I have and top up after mash or the larger stock pots.I was thinking of my 70 litre pot and a electric element and pump/pid as a future set up ( I hope to get a 70 litre thermopot when funds allow)
I have the pump,pid and pots already but need to source a suitable element and grain bag
I am planning to do a brew tomorrow ,I have never brewed BIAB but could give it a try as I have a voile curtain I could use.
It would be interesting to try a brew and compare with my 3 vessel results as I have brewed this recipe several times
I could use the 40 litre buffalo boiler I have and top up after mash or the larger stock pots.I was thinking of my 70 litre pot and a electric element and pump/pid as a future set up ( I hope to get a 70 litre thermopot when funds allow)
I have the pump,pid and pots already but need to source a suitable element and grain bag
Post #6 made 12 years ago
Nice one paul, give it a shot..
I've never 3V'd as it always looked complicated, then when I researched it a bit more I stumbled across Biab and Voila !! (see what I did there
) There are guys who have 3V'd on here and don't bother with it anymore so it will be interesting to see what you think.
Which pot are you going to use ? I'm a bit confused as I'm thinking that only your 40L is ready to go, or can you boil with the 70L ?
I've never 3V'd as it always looked complicated, then when I researched it a bit more I stumbled across Biab and Voila !! (see what I did there
) There are guys who have 3V'd on here and don't bother with it anymore so it will be interesting to see what you think.Which pot are you going to use ? I'm a bit confused as I'm thinking that only your 40L is ready to go, or can you boil with the 70L ?
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Post #7 made 12 years ago
yeasty my 70 and 100 litre pots dont have an element I currently use them to boil with gas burner,I favour the 70 litre because I wouldnt need to mess around topping up
Post #8 made 12 years ago
aaahh got it now. deffo go with the 70L, I agree that its less hassle.
Good luck for tomorrow
Good luck for tomorrow
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Post #9 made 12 years ago
well my planned brew didnt happen it will be tomorrow for sure.
I input my 19 litre recipe for draught bass into the calculator and it increased the grain bill from 3.640 grams to 4.471 so I will go with that it will be intersting to see what happens
Paul
I am going to use my 40 litre buffalo urn and recirculate using pid/pumr from my herms kit
I know it appears to not be a good idea but I am stubborn and want to see for my self
I input my 19 litre recipe for draught bass into the calculator and it increased the grain bill from 3.640 grams to 4.471 so I will go with that it will be intersting to see what happens
Paul
I am going to use my 40 litre buffalo urn and recirculate using pid/pumr from my herms kit
I know it appears to not be a good idea but I am stubborn and want to see for my self
Post #10 made 12 years ago
Is this another GW recipe Paul. Can you post some details ?
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Post #11 made 12 years ago
yes yeasty it is
draught bass 19 litres
og 1043
pale malt 3460 gr
crystal malt 180
25 gr challenger hops 90 minutes (A/A 7.6)
irish moss last 10 minutes
mash 66c (151f) 90 minutes
boil 90 minutes
FG 1010
ABV 4.4%
bitterness 26EBU
colour16 EBU
unfortunately when checking my hops today I had no challenger so brewed courage directors bitter
19 litres
og 1046
pale malt 3160
white suger 295
crystal malt 220
black malt 22
22 gr target hops (11.4%)
irish moss 3 gr last 10 minutes I used protofloc 1/2 tab
4 gr styrian goldings post boil (4.5 A/A)
mash 66c 90 minutes
boil 90 minutes
FG 1008
bitterness 33 EBU
colour 29 EBC
anyway I input the figures into the calculator seeting brew length to 19 and end of boil to 1046 and it returned figures of
pale malt 3.640
crystal malt 235
black malt 24
I wasnt sure about the suger so i left it off the calculator
started with 33.5 litres @ 68 dough in dropped to 66 (good)
mash for 90 minutes whilst recirculating, removed bag sqeezed gently
calculator said should be 31.2 litres I had 29.4 @1.032 calc said 1.027
boiled for 90 minutes left with 23.9 exactly as per calculator so had slightly more evaporation rate tested gravity @20 c 1042 not 1046
cooled to 75 c added post oil hops for 30 minutes ,cooled to fermenter 20.5 litres as per calculator
decided to add the suger so boiled water and mixed suger added to wort pitched yeast
cant quite figure out the calculator yet as if I input the end of boil gravity 1046 and change the figure for efficiency the grain bill doesnt alter
draught bass 19 litres
og 1043
pale malt 3460 gr
crystal malt 180
25 gr challenger hops 90 minutes (A/A 7.6)
irish moss last 10 minutes
mash 66c (151f) 90 minutes
boil 90 minutes
FG 1010
ABV 4.4%
bitterness 26EBU
colour16 EBU
unfortunately when checking my hops today I had no challenger so brewed courage directors bitter
19 litres
og 1046
pale malt 3160
white suger 295
crystal malt 220
black malt 22
22 gr target hops (11.4%)
irish moss 3 gr last 10 minutes I used protofloc 1/2 tab
4 gr styrian goldings post boil (4.5 A/A)
mash 66c 90 minutes
boil 90 minutes
FG 1008
bitterness 33 EBU
colour 29 EBC
anyway I input the figures into the calculator seeting brew length to 19 and end of boil to 1046 and it returned figures of
pale malt 3.640
crystal malt 235
black malt 24
I wasnt sure about the suger so i left it off the calculator
started with 33.5 litres @ 68 dough in dropped to 66 (good)
mash for 90 minutes whilst recirculating, removed bag sqeezed gently
calculator said should be 31.2 litres I had 29.4 @1.032 calc said 1.027
boiled for 90 minutes left with 23.9 exactly as per calculator so had slightly more evaporation rate tested gravity @20 c 1042 not 1046
cooled to 75 c added post oil hops for 30 minutes ,cooled to fermenter 20.5 litres as per calculator
decided to add the suger so boiled water and mixed suger added to wort pitched yeast
cant quite figure out the calculator yet as if I input the end of boil gravity 1046 and change the figure for efficiency the grain bill doesnt alter
Post #12 made 12 years ago
Can you attach the calculator file Paul.?
Sugar is a PITA and I've posted how to deal with it before. The best way is to calculate what gravity points it will provide then take this off the recipe OG. Then calculate without the sugar. Brew as normal and add the sugar during the last 15 minutes of the boil and your then back on track.
295g of sugar is about 4.5 gravity points so adding this to your EOBG of 1042 you are not far away.
The new Biabacus can be altered to allow for fermentables like sugar, give it a go mate. Its miles better than the Calculator. If you are brewing again from GW or you just want a recipe ready to go give me a shout and we can sort it for you.
Yeasty
Sugar is a PITA and I've posted how to deal with it before. The best way is to calculate what gravity points it will provide then take this off the recipe OG. Then calculate without the sugar. Brew as normal and add the sugar during the last 15 minutes of the boil and your then back on track.
295g of sugar is about 4.5 gravity points so adding this to your EOBG of 1042 you are not far away.
The new Biabacus can be altered to allow for fermentables like sugar, give it a go mate. Its miles better than the Calculator. If you are brewing again from GW or you just want a recipe ready to go give me a shout and we can sort it for you.
Yeasty
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Post #13 made 12 years ago
I have got to the bottom of This input the figures on my other computer and got a totally different grain bill so adjusted the og down until I got the grain bill shown on my other computer (this was 1.035)I also changed the efficiency figures to 50 % and the program adjusted grain bill accordingly.
tried on the desktop computer the same thing 50 % grain bill remained unchanged .
deleted program downloaded again input figures program behaves correctly, change efficiency or OG grain bill scales ok.
It would appear my program on desktop was corrupted somehow,it had been on the computer some time .I am using open office.
It would seem I inadvertantly brewed a 1036 og beer but by adding suger as you say should be about right
my efficiencys according to calculator for 1.036 beer not put suger in calculator
into kettle 84.2
end of boil 85.7
into fermenter 73.4
this was recirculating,sqeezing bag but no sparge.I dont know how they compare but I am quite happy.
started mash 09.35am completly cleared away 14.45pm this include 1/2 post boil hops so 5.25 hours
definitly quicker the 3 vessel brewing
I have never worked out efficiency but tended to hit targer as per recipe (all g wheeler book) he says 75% figure used although I dont know if this is into packaging or not
I am definitely thinking of converting the 70 litre pot ,dont know whether to wait and ger a thermopot or use my normal stainless one and insulate it :
thanks for your interest yeasty
Pauk
tried on the desktop computer the same thing 50 % grain bill remained unchanged .
deleted program downloaded again input figures program behaves correctly, change efficiency or OG grain bill scales ok.
It would appear my program on desktop was corrupted somehow,it had been on the computer some time .I am using open office.
It would seem I inadvertantly brewed a 1036 og beer but by adding suger as you say should be about right
my efficiencys according to calculator for 1.036 beer not put suger in calculator
into kettle 84.2
end of boil 85.7
into fermenter 73.4
this was recirculating,sqeezing bag but no sparge.I dont know how they compare but I am quite happy.
started mash 09.35am completly cleared away 14.45pm this include 1/2 post boil hops so 5.25 hours
definitly quicker the 3 vessel brewing
I have never worked out efficiency but tended to hit targer as per recipe (all g wheeler book) he says 75% figure used although I dont know if this is into packaging or not
I am definitely thinking of converting the 70 litre pot ,dont know whether to wait and ger a thermopot or use my normal stainless one and insulate it :
thanks for your interest yeasty
Pauk
Post #14 made 12 years ago
Hi Paul
As you can probably tell I have studied GW's book
I confirmed that his efficiencies are End of Boil by working backwards using his extract recipes as a bench mark as we have no efficiency to worry about when extract brewing until we package. He states that 75% is a conservative figure and should be easly acheived, I would normally set the calc to 83% for a normal brew and acheive this no problem.
I think you have discovered the biggest problem with the calculator which is that it is so easy to input or change a critical value which can throw the whole recipe off. If you aren't familiar with how it works it can be a pain and time consuming to retify. Hence why I'm a massive fan of the new Biabacus, mistakes are much easier to discover and alot of the data input is simple.
Anyway enough rambling, it looks like we may have another 3V convert in our midst. Glad the brew day went well, I'm sure your beer will be fantastic.
Keep posting
Yeasty
As you can probably tell I have studied GW's book
I confirmed that his efficiencies are End of Boil by working backwards using his extract recipes as a bench mark as we have no efficiency to worry about when extract brewing until we package. He states that 75% is a conservative figure and should be easly acheived, I would normally set the calc to 83% for a normal brew and acheive this no problem.I think you have discovered the biggest problem with the calculator which is that it is so easy to input or change a critical value which can throw the whole recipe off. If you aren't familiar with how it works it can be a pain and time consuming to retify. Hence why I'm a massive fan of the new Biabacus, mistakes are much easier to discover and alot of the data input is simple.
Anyway enough rambling, it looks like we may have another 3V convert in our midst. Glad the brew day went well, I'm sure your beer will be fantastic.
Keep posting
Yeasty
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Post #15 made 12 years ago
yeasty
just looked at the new calculator seems good ,but I couldnt see how to input sugar inth e fermentables box it said go to extract potential adjustments but cant work out how to use it .must search for help in questions and answers
just looked at the new calculator seems good ,but I couldnt see how to input sugar inth e fermentables box it said go to extract potential adjustments but cant work out how to use it .must search for help in questions and answers
Post #16 made 12 years ago
Last edited by Yeasty on 11 Jan 2013, 06:33, edited 2 times in total.
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