Barley risotto

Name: Barley risotto
Cuisine: Mediterranean, Italian, European
Ingredients: 2 tablespoons butter or olive oil lonion, finely diced 1 leek, finely sliced; 1clove of garlic, crushed; 175g pearl barley, washed and drained; 60ml dry white wine; 450-500ml chicken or vegetable stock, made up so it's weak (and not too salty); a handful of fresh parsley, finely chopped; salt; freshly grated Parmesan, to serve (optional)