Is there a substitute for port wine in a dessert risotto? I am looking for a substitute for port wine in a "dessert risotto" that I would like to make. It's not that I'm worried about the alcohol (I would actually prefer to use the port), I just can't purchase alcohol since I'm under 21 and living in the US. 

Since context is everything, here is the recipe for the Port Raspberries &amp; Cream Risotto I plan to cook. .

Again, I am unable to purchase alcohol (except for cooking wines), so please do not suggest alcoholic alternatives.
Please do not use a cooking wine. Those are awful. Pick a juice, any juice. I'd say cranberry. You probably don't want anything too sweet.