Red Wine Pickled Pear Tart

Ingredients

• 2 small pears, (not too ripe)
• 300ml of red wine
• 1 sprig of rosemary
• 1 cinnamon stick
• 1 garlic clove
• 3 tbsp of sugar
• 80ml of distilled pickling vinegar
• 400g of red onion, sliced
• 100g of soft brown sugar
• 1/2 orange, zest and juice
• 1 onion, finely diced
• 2 garlic cloves, finely chopped
• 1 dash of olive oil
• 1 tsp thyme leaves
• 1 handful of sage leaves, cut into chiffonade
• 200g of chestnuts, halved
• 270g of filo pastry, (one packet)
• 40g of butter, melted
• 80g of Stilton
• 12 sage leaves
• Vegetable oil