In a saucepan cook the pineapple, red onion and brown sugar, over medium heat, until the onions become translucent and the pineapple begins to lightly brown (caramelize), about 10 minutes. Add the ginger, water, honey, soy sauce, sesame oil, salt, pepper and raisins if using. Cover the pot and cook, over low heat, about 10 minutes. Spoon the chutney into a bowl and chill. When ready to serve, stir in the mango and jicama.