The trouble with eating Italian food is that five or six days later you're hungry again.

As quoted in: Eat these words: a delicious collection of fat-free food for thought (HarperCollins Publishers, 1991), p. 22.

There are many similar quotes without attribution found in earlier books.

Variant 1: "But you know, there's just one thing about these big American Thanksgiving dinners. You eat one, but a couple of days later you're hungry again."

Variant 2: "The big problem with eating a full meal of Jewish food, so the saying goes, is that three days later you're hungry again."