Chestnut and Ale Pie - StyleNest

Ingredients

• 20 chestnuts
• 1 tbsp olive oil
• 1 red onion, cut into wedges
• 2 large parsnips, peeled and cut into bite-sized pieces
• 2 large carrots, peeled and cut into bite-sized pieces
• 1 garlic clove, crushed
• 1 tbsp plain flour
• 200ml vegetable stock
• 300ml Southwold Winter Beer
• 1 tbsp chopped fresh sage
• pinch sugar
• 2 tbsp milk, to glaze
• 200g plain flour
• 100g chilled butter, diced
• 1 tsp chopped fresh thyme
• 1 medium egg yolk