Dunder for brandy washes?

[clarkee142]

Has anyone tried a dunder pit for brandy? I have tried it with rum and with excellent results with a significant improvement in nose and taste but I havent heard of dunder being used in a brandy.
Here in Bulgaria it is common for the wash to be prepared in autumn (fall) and then left all winter and distilled in early spring. It results in a sometimes heavy bacterial growth on the surface which I guess is a chlostridium or similar. The locals in the village say it improves taste, so I guess this is equivalent to a dunder. But have never heard of a brandy dunder being adding directly to the wash.

nazdrave