Cheeseburgers

Ingredients

• 400 g minced beef, 18-20% fat
• 2 tsp. flake salt
• 2 tbsp. Worcestershire sauce
• 2 tbsp. panko breadcrumbs
• 1 egg
• oil for frying
• salt and pepper
• 2 slices of cheddar
• 3 tbsp. mayonnaise
• 2 tsp. chipotle in adobo sauce (or other chilli sauce)
• 2 quality burger buns
• 2 tbsp. butter
• 1 tomato, sliced
• 1 red onion, sliced
• a few lettuce leaves