GrumpyPaul
Well-Known Member
I am seeking some advice from the BIAB gurus.
I have a 25l Birko Urn that is obviously not big enough to hold the full volume of water and grain for a 23 litre batch.
I have plugged my recipe into the BIAB Designer Spreadsheet. My total grain bill is 5.7lg and it suggest I need to mash in 31litres
Could I do the following?
Method 1
Mash in 20 litres in the urn
Prepare 11 litres on stove top as strike water
At the end of the Mash - lift bag into a bucket and rinse grain with prepared water
Pour half (roughly) of the sparge water into the urn and commence boil
Gradually top up the urn with the remaining water as it evaporates
OR
Method 2
Mash in 16 litres - Sparge in 5litres to bring bring boil volume to 21 litres
At the end of the boil top up (either in urn or fermenter) to the desired 23 litres with boiled water
My thinking is that if the grain bill is based on a 23 litre batch but mash and boil are less I am making a more concentrated wort just like my kit and extract days that I can top up with required amount of boiled water.
Thanks in advance for any advice
I have a 25l Birko Urn that is obviously not big enough to hold the full volume of water and grain for a 23 litre batch.
I have plugged my recipe into the BIAB Designer Spreadsheet. My total grain bill is 5.7lg and it suggest I need to mash in 31litres
Could I do the following?
Method 1
Mash in 20 litres in the urn
Prepare 11 litres on stove top as strike water
At the end of the Mash - lift bag into a bucket and rinse grain with prepared water
Pour half (roughly) of the sparge water into the urn and commence boil
Gradually top up the urn with the remaining water as it evaporates
OR
Method 2
Mash in 16 litres - Sparge in 5litres to bring bring boil volume to 21 litres
At the end of the boil top up (either in urn or fermenter) to the desired 23 litres with boiled water
My thinking is that if the grain bill is based on a 23 litre batch but mash and boil are less I am making a more concentrated wort just like my kit and extract days that I can top up with required amount of boiled water.
Thanks in advance for any advice