Yes, I knew what it was. And that just about summed up my knowledge of the subject. I could hear Vin Scully's voice echoing in my head. Let's see . . . The term is also used in California and in Spanish-speaking countries.
Most grappa is harsh, coarse, young and fairly mediocre.
Wine , the UC Davis reference written in 1965 by Maynard A. Amerine and Vernon L. Singleton. It has been called grappa and is sold as a colorless beverage. It is often used in coffee, which seems as good a use as any. Not exactly a ringing endorsement. I decided the only thing left to do was travel the highways and byways of Sonoma County and see what I could dig up on my own.