Chicken Katsu Burger

Ingredients

• 100ml cider vinegar
• 100ml water
• 1 tbsp sugar
• 1 tbsp salt
• 1 each large red onion, thinly sliced
• 1 tsp vegetable oil
• 50g onion, thinly sliced
• 1/2 tsp garlic, minced
• 1/2 tsp ginger, minced
• 2 tbsp Wing Yip Chinese Curry Concentrate
• 4 tbsp water
• 1 tsp white miso paste
• 1 tsp light soy sauce
• 1 tsp honey
• 2 each chicken breasts
• 50g plain flour
• 1 each medium egg
• 100g panko breadcrumbs, lightly blitzed in a food processor
• 2 tbsp vegetable oil
• 2 each burger buns
• 4 tbsp mayonnaise
• 1 each baby gem lettuce
• sweet potato fries to serve