Sweet-and-Sour Pineapple Chutney

In a saucepan, combine the sugar with 2 tablespoons of the water; cook over high heat until the sugar is dissolved. Cook without stirring until the sugar begins to caramelize around the edges, 2 minutes. Remove from the heat, add the pineapple, onion, crushed red pepper, vinegar and the remaining 3/4 cup of water; season lightly with salt. Bring to a simmer and cook, stirring occasionally, until jamlike, 15 minutes. Stir in the mint. Serve warm or at room temperature.