Premise: A grasshopper is a sweet, mint-flavored, after-dinner drink. The name of the drink derives from its green color, which comes from crème de menthe. The drink reputedly originated at Tujague's, a landmark bar in the French Quarter of New Orleans, Louisiana, and was invented by its owner, Philip Guichet. The drink gained popularity during the 1950s and 1960s throughout the American South.
Hypothesis: Crème de menthe is blue in color.