Do You Double Dip?

If yesterday's Super Bowl party has left your gut in distress, a Clemson professor says you might blame the double-dippers.

Last year the food microbiologist's undergraduate students examined the effects of double dipping using volunteers, wheat crackers and several sample dips. They found that three to six double dips transferred about 10,000 bacteria from an eater's mouth to the remaining dip sample.

Unlike George Costanza, I never double-dip. If anybody's looking.