What inspired those chefs to come up with sea salt coffee? According to spokeswoman Kathy Chung, it was the Taiwanese habit of sprinkling salt on fruits like pineapple and watermelon to bring out their sweetness. Salty coffee also makes sense in a place where shaved-ice desserts are topped with corn kernels and breads get slathered with sugary frosting and bits of pork. After sea salt coffee spent two weeks as the best-selling drink at 85C outlets in Taiwan, the company is sending the flavor combo to its China branches. If it's a hit there, Chung says, this cup of Taiwanese sophistication may be exported to the west too. Could salty Frappuccinos be far behind?