This question already has an answer here:

What exactly is the blooming process and why do we do it?

Excerpt from Peets:

Pour enough water to cover the grounds, start your timer and wait for the grounds to puff up. This stage of extraction is called the "bloom." Stir to saturate the grounds evenly. Then add remaining water to fill. Fill to the top of the metal band.

marked as duplicate by hoc_age Jun 15 '15 at 15:31

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    See related questions: what is coffee bloom?, which addresses what's happening and why. Another question specifically on bloom and French press. There's also a coffee-bloom tag; I edited to add the tag. Is your question different from those? – hoc_age Jun 15 '15 at 15:23
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    I tried to use bloom as a tag but it didn't exist, why would 'bloom' need a 'coffee' prefix on a coffee forum? I'll read those posts, thank you – Dan Beaulieu Jun 15 '15 at 15:25
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    @hoc_age, yes they do, you can mark this as a duplicate – Dan Beaulieu Jun 15 '15 at 15:29
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    We asked the very same "coffee word in tag?" on Coffee Meta at here and here! By typing "bloom" in the tag part it should auto-complete... and you can search tags here. Okay, no problem -- I'll mark as dupe. Good question, though! Thanks. – hoc_age Jun 15 '15 at 15:29
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    And finally -- this previous question about purpose of bloom from Seasoned Advice. :) – hoc_age Jun 15 '15 at 15:38