Teriyaki deli chicken

Name: Teriyaki deli chicken
Prep time: 15 min
Cook time: 40 min
Total time: 40 min
Yield: 6 portions
Ingredients: 1 tsp extra virgin olive oil; ½ tsp sesame oil; 2 garlic cloves; 2 spring onions/green onions; 20 g fresh ginger; 1 tsp sea salt; 500 g chicken breast fillet; 15 g fresh ginger; 1 garlic clove; 250 g water; 50 g mirin; 1 tsp Vegetable stock paste; 100 g gluten free soy sauce; 150 g brown sugar; 3 tsp gluten free cornflour; 1 tbsp sesame seeds; 1 tbsp nigella seeds