A legally defined growing region, protected by its respective government as unique for the growing of the particular fruit product, example, Bordeaux, Champagne, Scotland, Napa, etc. Due to the uniqueness these select product acquire a cache and high selling price unlike generic categories which may be produced anywhere in the world. Just as Bourbon can only be produced in the U.S. and Champagne only produced in France, to be called tequila, a spirit must be made from agave grown, processed and aged in specific regions of Mexico.

All of the factors that impact a particular fruit: heat, humidity making that location unique, not to to be replicated anywhere else, and traditionally after many years (centuries) of experimentation arrive at what thrives best there.