Cheese and potato pasty

INGREDIENTS

• 225g/8oz plain flour
• 100g/3½oz butter
• 1 free-range egg
• salt and freshly ground black pepper
• 80g/3oz walnuts
• , to bind (if necessary) milk
• 400g/14oz new potatoes
• 400g/14oz smoked cheese
• handful baby spinach
• 2 red onions
• 1 free-range egg, beaten, for egg wash
• 1 tbsp olive oil
• 1 onion
• 1 garlic
• 1 chilli
• thumb-sized piece fresh ginger
• 450g/1lb carrots
• splash green ginger
• 150g/5oz demerara sugar
• 150ml/5fl oz white wine vinegar
• 1 tsp ground cloves
• 1 tsp ground cinnamon