Sophie Gray's classic cottage pie Recipe | Beef + Lamb New Zealand

Ingredients

• 500g Quality Mark beef mince
• 1 onion
• 1/4 cup plain flour i
• 2 cups beef stock i
• 1 1/2 cups frozen mixed vegetables
• 1/2 tsp mixed herbs
• 1 Tbsp Worcestershire sauce i
• 1 tsp dark soy sauce i
• 2 Tbsp tomato sauce
• salt and pepper
• 800g potatoes i
• a knob of butter i
• 1/3 cup milk i