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).
Making the world better, one answer at a time. A 1.8 kg turkey crown should cook for at least an hour and a half. The turkey should cook in the oven at 400 degrees Fahrenheit. 12 pound turkey crown should cook in the oven for at least 3  hours. The turkey should cook at a temperature of 325 degrees.