I'm organising food for a dedication service at church and, because we've only got one oven in the kitchen, the mother has suggested we do baked potatoes in the oven & some sauces on the hob. Great idea, but I've been cooking jacket potatoes in the microwave for so long I've completely forgotten how to do them in the oven. What temp? How long for? Foil or no foil round them? I'd be very grateful for any tips - it's not till March, so have time to practise at least!