Sausage Rolls

Pastry

• 8 oz all-purpose flour plus extra to dust
• 6 oz unsalted butter in pieces, frozen
• ⅛ tsp salt
• 2 ½ oz ice water

Sausage Filling

• 4 oz yellow onions quartered
• 16 oz ground pork sausage crumbled
  或 16 oz uncooked pork breakfast sausages crumbled
• 1 tsp mixed dried herbs
• ½ tsp salt to taste
• ⅛ tsp ground black pepper
• 1 large egg whisked, to brush