I am going to try this next week, so I do not know if it works well yet...but I found an article on line about a chocolate company in Texas that uses cornstarch to mold the liquor. From what I read, you take a pan of cornstarch, make small indentations in it and then fill with liquor. Sprinkle a little corn starch on the top to cover the liquid pools. Let it set for 3 days and you will basically have a very delicate ball of liquid. (The cornstarch reacts with the liquor to form a plastic-like ball that will not interfere with the taste or texture.) Carefully brush off the access cornstarch and then carefully cover with a thin layer of chocolate. Good luck!