You can make a jelly with agar agar, then blend it down to a paste to pipe it in the mold. Prairie girls suggestion with the neutral glaze works as well but will sweeten your alcohol mix. You can also spray a layer or tempered cocoa butter to create a membrane that will protect the liquids. The issue of liquids will be the fact that they will leak out very fast. I would go for the agar solution with a sheet of gelatine to absorb the extra humidity or make a ganache. There are nice chocolates out there that can be paired with wines and enhance the flavour. That's my personal thoughts on the question.