Beer turned sour. Can I save it?

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Beeks

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We made a Guinness clone but it has a sour taste. Never had this happen before.

is there anything that can be done to save the batch? Or do we just have to dump it and let it go?
 
If it's just slightly tart, as with a lower than expected pH, but not due to bacterial contamination, you could try adding baking soda or slaked lime.

If it's a strong lactic or acetic sour from contamination, there's nothing you can really do IMO.

BTW, Guinness is supposed to be very slightly tart.
 
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