I had this with supper last night:
Brand: Caruso's Limoncello Italian Style Soda.
Origin: Redding, California.
Purchase Place: Frattallone's Ace Hardware, St. Paul, MN.
Review: This had a nice tart flavor to it, but it wasn't so tart that it was undrinkable. It was someone between a lemon and a lime flavor, but it wasn't "lemon lime" (if that makes any sense). This was pretty good.
Score: 7 out of 10.