Whiskey Barrels - how much loss to soakage/evaporation?

[Bubbles]

Lads,

Myself and Shanna were trying to work out how much extra porter to have on hand for top-ups after the barrel has soaked up a few litres and the angels have taken their share. We were thinking 5%-10%?

What are the other projects doing about this? Any thoughts?

Ta.

[Ciderhead]

10 litres to the barrel, soakage evaporation etc
10 Litres as "the control" to check against how the brew is going and to replace say max a litre that you take out to check every other month to see how its progressing v's starting point.

[Hop Bomb]

The barrel would need to be as full as possible to prevent excess oxidation Id say.

[Shanna]

Hi Ciderhead

I thought the plan was to bung this bad boy up and not touch it till Xmas.

Shanna

10 litres to the barrel, soakage evaporation etc
10 Litres as "the control" to check against how the brew is going and to replace say max a litre that you take out to check every other month to see how its progressing v's starting point.

[Ciderhead]

Na you need to see how its getting on with something like a wine thief every couple of months and compare it to the base.
if it starts to go off you might want to salvage it.
In my eyes it should probably be left there 12 months.
FW second batch of oak aged stout is a little too green for my liking v's their first one