Friday, while at the grocery store, I picked up a carton of "Carnival
Sweet" grapes. They're advertised as white grapes but are in fact an
extremely pale yellow grape, not at all like the Thompson seedless
grapes.

They're nice and sweet for the first 3-5 seconds after biting into them.
Then they become very astringent and seem to suck the saliva right out
of my mouth. Disappointing for grapes that are $3.99 per pound and I
don't think they will find their way in my shopping cart again.