Purpose: This calculator determines the volume of fermenting wort needed to achieve a desired level of carbonation.
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Kraeusening is a German practice of adding fermenting wort to the batch at bottling time for natural carbonation. This approach was once done by some Midwestern breweries such as Heileman's Old Style. For tips and further information, please see this resource from Braukaiser.
The documentation and an explanation of how it works is available at this link.
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