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I've been reading the How To Brew book, which is generally good, but the author uses the term "knockout" without definition a couple of times. What does it mean?

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could someone with more rep add a "terminology" tag... a "defects" tag would also help. – Rich Armstrong Feb 19 '10 at 16:01
I'm surprised this term isn't in the Homebrew Talk wiki (or any other I know of). Guess I'll make a page over there. – Dean Brundage Feb 19 '10 at 19:15
@rich tag added. Thanks – hookedonwinter Feb 22 '10 at 16:06
up vote 6 down vote accepted

According to this page, it's the very end of the boil. Minute 0.

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Ever feel like you're talking to yourself? ;) – hookedonwinter Feb 19 '10 at 16:24
It must be true, it's recorded in a wiki: homebrewtalk.com/wiki/index.php/Knockout – Dean Brundage Feb 19 '10 at 19:21

Yep. It's when you shut off the burner (or heat source) on your boil kettle. You "knock-out" the flame.

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Also called flameout! – brewchez Feb 24 '10 at 13:00

Knocking out is when you chill the wort. For example I knocked out to 18˚C so I could pitch my yeast. Flame out is minute 0. For example I added 45g willamette hops at flame out to add aroma.

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Your answer is not bad, but it brings nothing new. Downvote is not from me, but I kinda understand where it came from. – Mołot Apr 28 at 7:58

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