The unsavory practice of dipping a tidbit, taking a bite, then dipping again is an absolute no-no. “Dip once and you’re done,” says author and fashion designer Cynthia Rowley. “It’s an issue of saliva.” What if the salsa is better than the chip? “Dip deep the first time,” suggests event planner Colin Cowie. Another way to increase the dip-to-chip ratio without offending: Break the chip in two.