Boundary Oak Distillery in Elizabethtown plans to officially launch a bourbon brand on Thursday. We last heard from Boundary Oak when it launched its Kentucky Moonshine line a few months ago. Its new product is billed as the first bourbon to be legally produced in Hardin County in more than 100 years. Hardin County has been a dry county until recently. The bourbon brand will be launched at an event at the Stone Hearth Restaurant in Elizabethtown on Thursday. The first barrel that the company plans…