Brioche Smash Burger - Warburtons

Ingredients

• A Warburtons Brioche Burger Bun
• 150g 5% fat beef mince
• Dash of vegetable oil
• 1/2 white onion, chopped into rings
• 2 slices double Gloucester cheese - with onion & chives
• Handful of gherkin slices
• 4 leaves of romaine lettuce
• 1 vine tomato sliced
• 100g skin on fries
• 2tsp mayonnaise
• 1 tsp sriracha
• 1/2tsp whole grain mustard
• 1/2 tsp English mustard
• 1tbs crème fraiche