here in the USA offers a "Barrel Kit" in a variety of sizes.
I've been meaning to give this a try but have yet to get around to
ordering. As someone who owns two JD barrels, the Wasmund's
pricing is quite reasonable.
[edit to add - I have e-mailed Wasmund's twice (April & June 2009)
asking for specific details on this program but received no reply.
That may explain why I never got around to ordering...]
By the way, I first learned of the Wasmund's program on John Hansell's blog
MJL is correct about the ******* of spirits in the barrel. Wasmund's
sells you the empty charred barrel with the bottled spirits which
you put in the barrel and age as you like.
On a related note, the Bourbon Dork recently started a "re-barrel
with some Very Old Barton BIB. Click "newer posts" at
lower left of the post for the progress.
edit: I e-mailed again and did receive a reply from Rick
Wasmund regarding the barrel program. I hope to set
something up soon!