Double Decoction Mash from "Modern Homebrew Recipes" by Gordon Strong, pg. 185.
This method was for his Nothing But Vienna recipe, I used my own recipe however.
My mash tun is a 10 gallon igloo so I started with 2 qts per pound and added cool or boiling water as needed to hit target temps. I was able to keep it all fairly close just by pulling and heating the thick mash (decoctions) as described. I added boiling water at the end to hit 170 after which I did a Vorlauf.
I vorlauf all of my recipes (Gordon Strong again), which is to say I recirculate the mash liquid until I have at the least circulated 10 gallons. I don't have a pump, I use a pitcher or pot.
Boil for 30 minutes then add hops for the remaining 60 minutes.
Make a starter for the yeast. Don't forget yeast nutrient.
Ferment at 52 degrees for 2 weeks. Transfer brew to new carboy.
Diacetyl rest for 48-72 hours 65-72 degrees (very important)
Lagering- back in cooler, drop wort temp 1 degree per day until you hit 32 degrees. Come back in a few months.
O.G. 1.052 1/3/2020
F.G. 1.013 4/19/2020