While most kids were licking their fingers after dipping into the sugar bowl or squeezing mounds of maple syrup on to their pancakes, I took to sprinkling salt on my hands and licking it. (This was long before I knew that people usually follow this with tequila and a lime.) There has been a definite trend toward the addition of coarse salt to sweets. It’s been spotted on the brownies at Trader Joe’s, and…