Hi guys
I am attempting my first BIAB and I have decided to go with the Punkie IPA Clone that I found on the malt miller website. I have a quick question if anyone can help, I dont have a very big kettle and was planning on doing a 2.5 gl brew, the kit and ingredients I have bought is for a 5gl brew, is it a simple case of halving the ingredients or is it more complicated than that ? Im a little confused to what water volume to use.
the link is here incase anyone would like to check it out
http://www.themaltmiller.co.uk/index.ph ... ductId=611
Thanks
James
1st BIAB -
Re: 1st BIAB -
Yes just halve it.
To calculate water, download Brewmate is my recommendation. Otherwise, it's 2.5 Gallons plus your expected losses. Usually about 1 litre per kg of grain is absorbed into the grain, then about 10% is lost to evaporation, and then it's whatever you leave behind in the kettle with the hops and trub. Some people allow for loss to sediment in the FV too, so that they bottle 2.5 gallons.
These things vary from person to person, depending on your brewing equipment, length of boil etc.
2.5 gallons = 11.4 litres. Maybe aim for 12 litres in the FV.
2.5kg grain loses approx 2.5 litres.
Maybe allow 2 litres to trub/kettle loss.
Adds up to about 16 litres. You need to add about 10% evaporation, so 16 x 110% = 17.6 litres.
I would round up to 18 litres, you may lose more than 10% to the boil, If not, you get 12.4 litres in the FV, allowing a litre loss to sediment, and it may well be more than that.
Brewmate tells me to use 18.36 litres to get 12 litres in the FV, Cos I forgot that when the wort cools to room temperature it shrinks about 4%.
Make a note of the exact quantity you get in the FV at pitching temperature, and adjust the next brew's water accordingly. Your first brew is based on a guesstimate.
To calculate water, download Brewmate is my recommendation. Otherwise, it's 2.5 Gallons plus your expected losses. Usually about 1 litre per kg of grain is absorbed into the grain, then about 10% is lost to evaporation, and then it's whatever you leave behind in the kettle with the hops and trub. Some people allow for loss to sediment in the FV too, so that they bottle 2.5 gallons.
These things vary from person to person, depending on your brewing equipment, length of boil etc.
2.5 gallons = 11.4 litres. Maybe aim for 12 litres in the FV.
2.5kg grain loses approx 2.5 litres.
Maybe allow 2 litres to trub/kettle loss.
Adds up to about 16 litres. You need to add about 10% evaporation, so 16 x 110% = 17.6 litres.
I would round up to 18 litres, you may lose more than 10% to the boil, If not, you get 12.4 litres in the FV, allowing a litre loss to sediment, and it may well be more than that.
Brewmate tells me to use 18.36 litres to get 12 litres in the FV, Cos I forgot that when the wort cools to room temperature it shrinks about 4%.
Make a note of the exact quantity you get in the FV at pitching temperature, and adjust the next brew's water accordingly. Your first brew is based on a guesstimate.
Last edited by Clibit on Mon Dec 15, 2014 7:56 pm, edited 1 time in total.
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coldfoot80
Re: 1st BIAB -
Hi
thats brilliant thanks so much for that, I'll download brewmate and see how I get on
Thanks
thats brilliant thanks so much for that, I'll download brewmate and see how I get on
Thanks
Re: 1st BIAB -
I use the BIABacus spreadsheet from biabrewer.info. Enter the dimensions of your pot and the recipe. It will scale the ingredients and give you all the water volumes you need. Its estimates are usually pretty good, and over time you can tune it to be spot on.