Step 1 In a saute pan over medium heat, sweat the apples until they start to become tender, stirring frequently, 4 to 6 minutes. Stir in the dried apricots and raisins, the cider vinegar, orange zest and juice, cinnamon stick and brown sugar, and cook, stirring frequently, until the mixture begins to break down and takes on a deep, golden brown color, about 20 minutes. Remove from heat and stir in the mustard. Cool to room temperature. This makes a generous 2 cups mostarda, which will keep, covered and refrigerated, up to 1 week.