Yakitori skewers from the Big Green Egg

Ingredients

• 400 g chicken thigh fillet
• ½ tbsp olive oil
• ½ red chilli pepper
• 200 ml mirin
• 100 ml sake
• 200 ml salty soy sauce
• 50 ml ginger syrup
• 50 g black bean pepper sauce
• 50 g dark brown caster sugar
• 1 spring onion
• 1 tbsp furikake seasoning or sesame seeds
• 10 g bean sprouts