How do you make chocolate mold with liquor inside?

I see them in the stores all the time around the holidays. They are just a small piece of candy that has liquor on the inside instead of a creamy filling or whatever else you find in the middle of chocolates. I thought it would make a nice idea to make for a xmas party we are going to. We have to bring a homemade item so I thought these would be a hit. Anyone know?|||http://www.onestopcandle.com/chocolate/l鈥?/a>