Brew day 1/6/18. Mashed at 148F for 1 hour. Vorlaufed, drained, then added 2 gallons at 170, vorlaufed and drained. Right before flameout I added 2 oz of CTZ hop hash (unknown AAU; ranges from 16-32%). Whirlpooled with a stainless spoon for about 4-5 minutes, then did a hop stand for about 10 minutes before starting my chiller.