Oozy Brioche Bun Cheeseburger Recipe - Ivy’s Reserve

Ingredients

• 4 tbsp olive oil
• 2 large onions, finely sliced
• 2 tbsp soft brown sugar
• 2 tbsp balsamic vinegar
• 1kg/2lb high-quality ground beef
• 4 tbsp mayonnaise
• 4 tbsp ketchup, plus extra to serve
• 6-12 strips smoked streaky bacon
• 1 tbsp maple syrup
• 6 tsp yellow mustard
• 120g/4oz Ivy’s Reserve Vintage Cheddar , sliced
• 6 brioche buns, halved
• 2 tomatoes, finely sliced
• 6-12 gherkins, sliced
• 2 baby gem lettuce heads, leaves picked