Step 2
While pork is marinating, combine pineapple, onion, serrano peppers, vinegar, brown sugar, pineapple juice, ginger, garlic, mustard seeds, and salt in a large saucepan. Bring to a slow, simmering boil. Reduce heat to low and simmer, stirring every 5 to 10 minutes, until thickened, about 45 minutes total. Remove chutney from heat, top with golden raisins, and allow to cool slightly, 10 to 15 minutes.