Step 1Peel and slice the pineapple into rounds three-fourths-inch thick. Cut the core out of each with a knife or small cookie cutter. Cut the pineapple slices into three-quarter-inch cubes. Thread the cubes onto 8 wood skewers.
Step 2Place the sugar in a saute pan large enough to hold the skewers flat in one layer over the low heat and heat until melted. Stir in the saffron with a wooden spoon and raise the heat to medium-high. Place the skewers in the melted sugar and cook, turning often, until the syrup turns a deep caramel color and the pineapple chunks are lightly caramelized on all sides, about 10 minutes. Remove from the heat (be careful, they're hot) and serve.