“Surely you have heard of Lake Keuka, and the Keuka grape vineyards?” She leaned forward with mischief in her eyes.

“No.”

“Have you ever eaten a grape, my dear Sir Knight?”

“Possibly.”

“A good, great, luscious blue grape?”

“Possibly.”

“Only possibly?”

“Well,” he hesitated, “y-es. Yes; I am sure to have eaten one. Now that I put my mind to it, I recall that it was especially large and sweet and——”

She leaned back, contented.

“Well, that was a Keuka Lake grape.”