Under-primed - Advice Required

[Begbie]

Evening everyone! Bottled my pimped-up MYO Irish Stout last night and had an 'oh feck' moment today, when, out of the blue, I realised that I'd under-primed.

I batch primed for 17 x 500ml bottles @ 4g per bottle, but I got a yield of 28 bottles. Don't ask! So, instead of 4g of sugar per bottle, I've now got approx 2.4g.

Anyway, 24 hours after bottling, do you think it should be OK to open each bottle and add another 1.5g? I've put a fair bit of effort into this brew, so don't want it to be under-carbonated.

 

[jof]

Don't worry, it will just be slightly less fizzy.
Might or might not be a good thing - depends on how you prefer your beer.
I mainly make english ale & always under prime as I prefer it to be less fizzy.
Buy you might need a certain amount of fizz to generate a head on your stout

 

[RichardM]

2.4g for a 500ml bottle of stout sounds about right.

 

[Begbie]

I've had a couple of under-carbonated beers, but it's happened with using carbonation drops. 1-drop per bottle. I think the ones I have weigh about 2 to 3g each. I'm thinking the drops are at fault.

I might put more sugar in, say, 10 bottles and see the difference.