"Why not? We can always get more from the natives if we need it."
"I know that, sir. _We_ can, but this is all _I'll_ get for the next
six months, and if I ration myself carefully, it might last that long.
You see, sir, it's mildly habit-forming--like cigarettes--and one gets
accustomed to it. And besides, you really don't know what flavor is
until you've tried vorkum on chocolate."