yes it can easily be done with a biscuit tin the last time i did it i laid out 6 bricks on they side in a square and built a small fire in the middle and when it was hot embers i put the tin on, lined the bottom with uncooked rice, tea leaves (out the bag) and brown sugar, put a leg and a wing of chicken on a rack id cut to size and ate it when it was cooked cant really tell you times or measurements as i made it up as i went along but sure you will find plenty on google