Ultimate Beef Burger Recipe | olivemagazine

Ingredients

• 500g steak mince
• red onion thinly sliced
• 1/2 tsp celery salt
• A splash of Worcestershire sauce
• chilli flakes
• 4 brioche burger buns toasted
• 2 vine tomatoes sliced to serve
• 8 emmental
• gherkins
• frilly lettuce
• 2tbsp red wine vinegar
• 2tsp golden caster sugar
• red onion very finely sliced
• 2tbsp mayonnaise
• 2tsp French’s American mustard
• 1tbsp gherkins very finely diced plus 1 tsp vinegar from the jar
• 1tbsp ketchup