Sausage rolls – Nine Bean Rows

Ingredients

• 1 tbsp vegetable oil
• ½ onion, finely diced
• ¼ tsp dried sage
• 500g pork mince or sausage meat (I like to use a mix of both)
• salt and freshly ground black pepper
• 1 sheet of ready-rolled puff pastry
• plain flour, for dusting
• 1 medium egg, beaten