Share 'ABV in chocolate confections'

I have been asked by a local winery to develop chocolates with some of their wines. I have developed some recipes I like using a ganache of chocolate, butter and wine (unreduced), however the Liquor Commision has told me the finished product has to have an alcohol by volume of less than 6%. Is there a way to determine what ABV is without sending the chocolates off for analytical testing? Thanks