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I'm from the UK and only really work in metric. Im having a bit of trouble converting this recipe into metric. In brewing does a "gallon" mean the imperial or american gallon? (23L or 18L)

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Just to be clear, I think the linked to recipe was made for a 2.5 gallon batch. I haven't worked off of recipes from hopville, but it says 2.5 gallon batch size under the extract/grist section. – brewchez Oct 20 '11 at 10:31
HopVille will automatically convert recipes between US and metric units. Check the two tabs at the bottom of the recipe page, in the center. – Mark McDonald Nov 1 '11 at 23:02
up vote 7 down vote accepted

It refers to American gallons. 5 gal.=18.92L

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