Leerdammer Beef Burger served with sweet potato fries!

• 4 x Burger Rolls, each cut in half
• 4 x good quality beef burgers
• 4 x sweet potatoes
• 4 x rashers bacon, if desired
• 2 yellow peppers – de-seeded and de-stalked and cut in wide slices
• 3 egg whites
• 4 sprigs Rosemary
• A handful of Sesame seeds – crushed with a pestle and mortar
• Vegetable oil
• Ketchup
• 4 slices of Leerdammer® Original