Homemade beefburger Archive

Ingredients

• 540g/1lb 3oz minced beef chuck steak
• 25g/1oz chopped coriander
• 1 onion, chopped
• 1 tbsp Dijon mustard
• 1 free-range egg yolk
• 1 tbsp olive oil
• salt and freshly ground black pepper
• 4 slices mature Cheddar
• 4 tbsp mayonnaise
• ½ iceberg lettuce, shredded
• 4 ciabatta rolls
• 1 red onion, sliced
• 1 beef tomato, sliced