Mini Keg

[Mike123]

I've bought a couple of £6 mini kegs (5l) off ebay to try. I was just wondering how much of an air gap to leave when filling? I plan prime lightly with 15g of sugar for conditioning.

[Cobnut]

When I've used these in the past, I've left somewhere between 1/2" and 1" at the top - although it is kind of hard to judge it - and have used 10-12g table sugar which gave a pretty decent fizz.

[IPA]

10 grammes should be more than enough.

[Mike123]

Thanks for your replies. As I am not a fan of lots of fizz I will give this a go. This would work out at 2g sugar per litre of beer, is this enough to condition beer in bottles too without too much fizz?

[Cobnut]

This would work out at 2g sugar per litre of beer, is this enough to condition beer in bottles too without too much fizz?

Yes.

[MashBag]

Thanks for your replies. As I am not a fan of lots of fizz I will give this a go. This would work out at 2g sugar per litre of beer, is this enough to condition beer in bottles too without too much fizz?

[IPA]

Yes

[MashBag]

I've bought a couple of £6 mini kegs (5l) off ebay to try. I was just wondering how much of an air gap to leave when filling? I plan prime lightly with 15g of sugar for conditioning.

If you want an accurate fill, you could fill by weight. Stand in on the scales. Zero it.
Brim it with water, this weight will be its full capacity. 1g water = 1 ml. From there you can work out everything else.

I do this with "bag in box" jobbies.

[Cobnut]

If you want an accurate fill, you could fill by weight. Stand in on the scales. Zero it.
Brim it with water, this weight will be its full capacity. 1g water = 1 ml. From there you can work out everything else.

That’s a good suggestion, but no need to pre-filled with water - simply put the empty keg on the scales and zero them. Then fill with beer. I do this for cornies, but I approximate 1Kg as 1 litre of beer. You won’t be far off with that, but if you want to be more precise, you need to base it on the FG which will typically mean 1L beer weighs a little more than 1Kg, e.g. at 1.010, 1L = 1.01Kg

[MashBag]

The reason for the prefill was to ascertain the airspace accurately and then work backwards to fill. No matter though really.