Overprimed Keg -- Bonehead Move!

Last night I was kegging three batches in a row: a best bitter-style Centennial SMaSH with a local malt and WY1968, an American Brown Ale, and a Cider that I intended to back-sweeten with 1 lb of sugar in the form of a rich simple syrup.

The SMaSH was to be primed, the Cider was to be back-sweetened and the Brown Ale was quickly force carbonated. Both the SMaSH priming and the Cider sweetening required pouring syrup into the keg, and I accidentially poured the 1lb of sugar syrup into the wrong keg, thus grossly overpriming my SMaSH Ale. It should’ve received 2.5 oz of corn sugar and it got 16 oz of cane sugar! I sealed it and set it aside and went to make another batch of syrup to properly back-sweeten my cider.

Now what to do? I ordered a spunding valve kit for the keg and thought I would let it ride out and keep it at 15 PSI (at ambient in my closet). This would presumably make for a boozy blonde ale that will be appropriately carbonated, with perhaps a bit extra sediment (I’m using a floating dip tube on this one, so that’s probably okay).

Does anyone have any other recommendations?

I considered adding enough sinamar to make it a sort of porter and kegging it after like a week, but I can’t think of a good way to determine when the carbonation level would be right, and I feel like a back-sweetened beer with cane sugar just seems weird. But I am a little concerned that lb of sugar will make for a very boozy beer.

The irony is that I already added some sugar to the boil with this one (8 oz cane sugar), as I wanted it dry. So now this beer is 12% cane sugar!

I think it will indeed be boozy, but I think it will be OK…spunding sounds like a good way to address the overcarb; my approach in cases where I overcarbonated was to just release the pressure release valve regularly…I guess that’s a “redneck spunding” approach. Your approach will probably do better.

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I think the spunding valve would be the best approach but I would set the pressure to release based on looking at a carbonation chart. If your closet is 60F and you want 2.4 volumes of CO2 then the pressure setting on the spunding valve would be 23 PSI.

Be careful about putting on your closet. Beer may be released with the excess CO2

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Thanks, I understand sounding in theory, but have no experience doing it and thought 15 PSI sounded good just because that’s the default setting. I’ll set it higher than that to get it to a low-average carbonation level.