Possible Clues:

• Dish that's best afore cooking?
• Cooked best o' fare?
• Cook's complaint concerning food
• In pan chuck something for traditional meal
• Fare to be cooked over first part of Sunday?
• Traditional British fare
• Sat before cooking the Sunday joint
• Traditional English dish
• Cooked breast of partridge ultimately providing a Sunday lunch option
• Seriously criticise complaint about food rejected by vegetarians ...