Heated HLT to 76C, 80 litres snd transferred to mash tun, using 20 US Gallons/75 litres to mash in. Milled grain to collect 31.2kg and mixed with mash paddle in tun. Once homogeneous I checked temp, sitting at 62C and closed lid, mashed for 60 minutes no recirc.
While mashing heated another 80 litres in HLT to 76C. Once mash completed sparged total HLT hot liquor over mash to collect 140 litres in kettle.
Kettle wort brought to boil. 60 minute boil with the addition of 150g Green Bullet at 30 mins from end of boil.
Flame out and recirculated through counter flow chiller until wort less than 20C, then transferred to fermenter.
Temp probe installed in thermowell, and glycol chiller engaged to drop wort temp further to 13.5C.
10L starter of M54 California Lager yeast pitched (approx 1500-1800 billion cells) added to fermenter.
Temp increased by 0.5C per day for next 6 days rising from 13.5-16.5*C.