Turkey with coumandaria, orange and chestnut

Ingredients

• 1 foodhaus Whole turkey 4kg
• 100g Lurpak butter unsalted
• 2 oranges*
• Maldon sea salt
• Maldon black pepper
• 80ml Chorio Bio olive oil
• 500g foodhaus chopped onions
• 250g foodhaus sliced carrots
• 250 foodhaus chopped celery
• 10 Alion thyme sprigs
• 250ml coumandaria*
• 500g Ardo Chestnuts
• For the sauce:
• 1 tbsp flour*
• 25g Lurpak unsalted butter