Formula needed

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JMBullfrog

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Carnarvon
I bought myself a 30 litre stainless steel brewing vat for Christmas. It is a nice rig with a cone-shaped bottom and two taps - one above the other. I just use Cooper's brew packs because I live in Carnarvon 1000 kms from Perth. The recipes for these call for making 23litres. Using 30 litres of water seems to dilute the finished taste and alcohol content. Does anyone know the formula to calculate the extra sugar needed to bump the alcohol content up to say 5%?
 
I bought myself a 30 litre stainless steel brewing vat for Christmas. It is a nice rig with a cone-shaped bottom and two taps - one above the other. I just use Cooper's brew packs because I live in Carnarvon 1000 kms from Perth. The recipes for these call for making 23litres. Using 30 litres of water seems to dilute the finished taste and alcohol content. Does anyone know the formula to calculate the extra sugar needed to bump the alcohol content up to say 5%?
Are you not leaving headspace?
 
You would be better off only using 23 litres of water and forget the sugar. If you add extra water add malt dried or liquid rather than sugar. The sugar just increases the % alcohol and you finish with a weak bodied beer.
 
Thank you for that information

There would be about 60-70mm headspace at 30litre mark.
that's perfectly fine, you want some headspace for foaming during active fermentation
Hell, most of the time I do 21-ish litre batches in a 50L fermenter and have no issues whatsoever
 


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