I just brewed an IPA that I've brewed numerous times. I skipped my bittering additions so that I could actually gauge the bitterness from whirlpool. The bitterness is totally different. The batch was 15 gallons in the fermenter. Cooled to 170 w 3 oz ea of Cascade, Centennial, and Citra for 30 minutes. I added 3 oz of each again when I started the CFC again. That addition ended up about 10 min starting at about 150. What I like is the fact that when you drink it the bitterness is so smooth. Whirlpool addition bitterness is slow on the palate. I'm not sure of the IBU, but drinks like a 30ibu beer. My next version will get all additions at flameout, with another charge once it hits 170ish. It lacks some of the bitterness it needs for balance. I do chill and recirculate in the kettle. I'm kegging today, so the bitterness perception could change with the carbonation. I find it nice to get all that fresh hop flavor from the whirlpool, without the palate wrecking bitterness.
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