Going through my numbers this morning. Yesterday’s brew day achieved a satisfying 81% Brewhouse efficiency
. My brewing process is settling down into a nice routine that, providing the equipment works
, yields ok results. For the record, I thought I’d share some of the details of my process. My set up is a 2 vessel (emulating a 3 vessel) BIAB HERMS
.
As I’m an outdoor under a gazebo brewer, I prepare the day before. Since I mounted all my stuff on trollies, getting it all out of the garage is now a quick and easy process. Everything is cleaned and tested. HERMS tank is filled with water and the boiler/kettle is filled with 8 gallons of tap water and campden tablet crushed and added. Grain bill is weighed out. Hops and yeast taken out of the fridge.
Brew day.
HERMS tank heating is turned ON (takes about 45 minutes to get up to temperature, 72C).
5 gallons of water is transferred to the fermentation bucket.
A kettle of hot water is added to the mash tun as a pre-heat.
The remaining 3 gallons of strike water is heated ready to mash.
The water is drained from the mash tun and the grain added.
Strike water is pumped (slowly) from the kettle through the mash tun tap to the grain.
Grain is given a good stir making sure there are no lumps.
Mash tun tap connected to the HERMS tank (via a pump) and wort is pumped (slowly) through the heat exchange and back to the mash tun.
Every 15 minutes, give the mash a good stir.
During the mash, transfer the remaining 5 gallons of water back to the kettle and heat to sparge temperature (75C).
At the end of the (first) mash, transfer the wort to the (now empty) fermentation bucket.
Refill the mash tun with half the remaining water, stir and recirculate through HERMS.
Stir after 15 minutes.
After a further 15 minutes transfer the wort to the fermentation bucket.
Refill the mash tun with the remaining water, stir and recirculate through HERMS.
Stir after 15 minutes.
Transfer the wort from the fermentation bucket back to the now empty kettle and start heating for the boil.
Transfer the last of the wort from the mash tun to the kettle (squeezing the grain bag to extract as much wort as possible) 15 minutes after stirring.
Once the wort is boiling, add hops according to recipe.
15 minutes from the end of the boil add 1/2 protofloc tablet (crushed) and start recirculating through whirlpool.
At the end of the boil, connect chiller circuit and start cooling while continuing to whirlpool.
When cooled, stop whirlpooling and leave for an hour before transferring wort to the now sanitised fermentation bucket (take sample for SG measurement).
Add yeast and fit lid.
Move bucket to fermentation fridge.
That’s what I do and it seems to work. Cheers