Bag in box carbonation

[Higgbot1970]

Hey all, has anyone had any experience of, rather than bottling or kegging,using bag in box? Im thinking of giving it a go mainly for space reasons,but can these bags stay whole and not burst during carb? I've got ten 5 litre bags and 5 boxes from a company called jigsaw. Your knowledge is appreciated

 

[Dads_Ale]

Hi.
I think these are the ones I tried a few years ago if they are the double skinned versions.
I never had a lot of success, the main reason being the inner layer is gas permeable so I found the CO2 generated during the secondary fermentation got trapped between the bag layers meaning I couldn't vent any excess pressure and they blew up like a balloon but the beer only had minimal carbonation.

I had the boxes strengthened with cable ties and the did hold quite a bit of pressure. If you have already got some then may be worth a try but keep the priming quite low.

 

[Higgbot1970]

Thanks for the info. Mine are only a single bag of plastic in an unlined cardboard box. The fact that you say it doesn't carb has made me think twice. 5 litres is a bit too much to waste. I might make some ginger beer and try that first. Thanks again

 

[Dads_Ale]

On mine I think a lot of the lack of carbonation was due to the gas getting in between the bag layers rather than staying in the beer.
I did get a single wall 5 litre bag to try out but never got around to using it.

 

[Higgbot1970]

I've made ginger beer in plastic bottles before using table sugar and Allinson's baking yeast and it carbed quite a lot,so I'm making some tomorrow and bagging it. I'll let you know how it goes