I bought a frozen turkey crown (serves 8-10 people) from Iceland and put it in the fridge on Tuesday night to begin defrosting and it's still pretty solid this morning. I want to cook it early tomorrow morning (6am ish) so what can I do to get it totally defrosted before 6am tomorrow? I'm out for most of today so don't have the option to use cold water and keep changing it. Can they be cooked from part frozen? What if I leave it out in the kitchen all day with no heating on? The packaging on the box says defrost for 48 hours in the fridge so I can't understand why it isn't defrosted! Help!