Cook the grouse covered for about fifteen minutes, uncover, turn the grouse breast down and cook for a further seven minutes, turn on to the other breast for a further seven minutes, turn upright again and cook for about five minutes making sure that it is not overcooking. Use a carving fork to see how cooked the grouse are and cook for a further five minutes or so if need be to deliver pink (desirable I think) as opposed to rare birds
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