My kids gave me a 2 liter charred oak barrel for Christmas. After much thought I asked my beverage director (aka my son) what he would age in the barrel. His response was to barrel a Vieux Carre. Now transmografied into my version: 600 ml Baltimore Spirits Company 6 year old barrel strength 100% rye whiskey, 500 ml BSC apple brandy, 100 ml BSC Smoked Pommeau liqueur, 600 ml Carpano Antica Formula, 75 ml Benedictine. I pulled .75 liters at 7 days and the rest at 22 days. I lean slightly towards the 7 day version because it's a bit brighter. The 22 day is deeper. Both are spectacular. So much fun!
Don't leave out the sugar, as it's essential to use sugar when muddling the lime to extract the essential oils from the lime peel. A caipirinha made right is sublime.