Vienna Lager

Will conduct decoction mash. Infuse grain with 5.3 gallons of water to raise temp to 100 then pull 2/3 of thick mash to decoct. Raise decoction to 159 and rest for 20 minutes, then bring to a boil for 10 minutes. Mix decoction back in to raise temp to about 149. Rest here for 10 minutes then pull a thin decoction of 33 to 40% of mash and bring to a boil for about 10 minutes while skimming off hot break. Mix back into main mash to raise temp to 161 to 167 and hold for 10 to 20 minutes. Rest for another 20 minutes if needed. Sparge with 167 to 176 degree water then collect wort for boil.

Mashed in with 5 gallons to a temp of 104, pulled 2/3 (about 4 gallons) of mash for thick decoction, after adding back in decoction temp went up to 168, had to add about half a gallon of cold water to get it back down to 149 for the 10 minute rest. Pulled 2.5 gallons for the thin dectoction. When decoction was added back temp came to 167, then let it rest for 10 more minutes. Actual OG pre was 1.045 instead of 1.036 as predicted, way more efficient than normal. Rest of boil proceeded as normal. Added about 3/4 gallon post boil to bring OG down to 1.046. Cooled wort sample tasted great.