Bucky, I think we're talking about the same thing. Ginger beer is a soda and is an ingredient in a Darm and Stormy. The recipe we've always used is:
2 oz Gosling's Black Seal Rum (or any dark or spiced rum)
8 oz Ginger Beer
Pour rum over ice, add ginger ale, and stir.
So yeah, Stewart's only sells soda, but you could use their ginger beer in the Dark and Stormy.
If you ever head down towards Central Jersey (Rt. 1 around Franklin Park) there is still a Stewart's soda stand. They make the best root beer floats!
-A balanced diet is a cookie in each hand