Place the mulberries and raisins in a bowl, cover with water, and allow to soak for 30 minutes. Drain. Then place in a medium-sized laminated pot, and add the sugar and water. Bring to a boil over high heat. Reduce heat to medium and simmer for 30 minutes. Add the pistachios, lime juice, and rose water and simmer for another 5 minutes or until the syrup has thickened eno