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My first best of home brew fermented for 6 days, then transferred to barrel for the net 3 weeks - i used woodforde's real ale mix.

BUT at the last seconds i forgot primer so i improvised wit 80g of caster sugar for 23 litres of beer.

Does anyone have experience of using caster sugar as a primer in a barrel? And more importantly - have i just borked my first barrel?!

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    Since I didnt know what caster sugar is. Caster (or castor[32]) (0.35 mm),[31] a very fine sugar in Britain, so-named because the grains are small enough to fit through a castor, a form of sieve. Commonly used in baking and mixed drinks, it is sold as "superfine" sugar in the United States. en.wikipedia.org/wiki/Sucrose#Culinary_sugars – jsolarski Apr 25 '15 at 2:35
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    Did you check the ingredients of the caster sugar? Sometimes fine-grained sugars include an anti-caking agent which may affect the flavour and appearance of the beer. – FishesCycle Apr 28 '15 at 19:16
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I think that 80g seems like not as much as you could've gone, however you'll still definitely see some carbonation. I'd recommend something about 100-105g or 150g of DME dissolved in some warm water.

Other than that, you should be fine. It's better to under carb then over carb and get bottle bombs!

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It will be fine. Depending on the beer's temperature and whether it was completely finished fermenting, you should have somewhere in the neighborhood of 1.7-2.2 volumes of CO2, which is perfect for a real ale.

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23 litres? Are you using a rotokeg? I add 90g of fine brown cane sugar (fairtrade from Lidl;) to my 23 litre rotokegs of English ale to prime them, and they come out great. Cheers!

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