Portobello Barley Risotto

• 1 onion coarsely (chopped)
• 1,100 ml vegetable broth fat removed
• 200 gr pearl barley (rinsed)
• 120 ml wine sweet (white)
• 80 gr portobello mushrooms
• 65 gr golden raisins
• 60 ml olive oil
• 3 gr rosemary leaves (fresh chopped)
• 3 gr italian parsley
• 1 gr allspice (ground)