Meanwhile, preheat your oven to 260'C/240'C fan. When the 3 hours has passed, cook the bread in the loaf tin for 30 minutes, covering with aluminium foil after the first 20 minutes. If the bread does not come out of the loaf tin when turned onto a wire cooling rack 2 or 3 times (Don't try to take it out upright) then cook for another 5 minutes with the aluminium foil on top, and turn onto a wire cooling rack, using the same method as before. Tap the bottom of the loaf, and if it sounds hollow, it is cooked.