My husband and I stopped here on our way back down to Virginia. (It's just inside the WV line before you cross the Potomac River to Virginia.) Please make the effort (or, rather, your car's effort) to make it up that little hill to the distillery. You'll be glad you did.
When we arrived we sat at the tasting bar that was all set upp & ready to go for sampling their wares. About 7 bottles were lined up & we had the opportunity to taste a wee bit of each. The commentary by the taste-master & his assistant was informative as well as humorous. (And that's not the spirits talking here.) We got to taste each cordial they produce as well as some "recipes" (e.g., adding some to sparkling water, serving over sherbet, etc.) using each type.
The distillery is in an old plantation building and is kept as it is. The kitchen is visible from the tasting room, which is kinda neat. When we were there (late-summer 2013), their Limoncello products utilized the lemons they grew on site.
The cordials and other products are sold on site. The have live music on weekends during warmer months.
This is definitely a place I will take visitors. I will be headed there to purchase some Christmas gifts as well.