Definition of carbuncle for English Language Learners. : 1  a large painful swelling under the skin. : 2  a jewel (such as a garnet) that is cut into a rounded shape.
For a 12-14 lb (5.5-6.5 kg) turkey: Cook for 40 minutes then reduce the temperature to gas mark 3, 325 F (170 C) and cook for a further 3-31/2 hours. Then give it a final 30 minutes (uncovered) at gas mark 6, 400 F (200 C).
Calculate the cooking time. The larger your turkey breast, the longer it will take to cook. When roasted at 325 Â°F (163 Â°C), turkey breast requires approximately 25 minutes cooking time per pound. 1  For a smaller four to six pound turkey breast, set aside between 1 1/2 and 2 1/2 hours.2  If you're cooking at an altitude of 5,000 or more feet, you'll need to add five to ten extra minutes' cooking time per pound.hen roasted at 325 Â°F (163 Â°C), turkey breast requires approximately 25 minutes cooking time per pound. 1  For a smaller four to six pound turkey breast, set aside between 1 1/2 and 2 1/2 hours. 2  If you're cooking at an altitude of 5,000 or more feet, you'll need to add five to ten extra minutes' cooking time per pound.