Biryani Arancini with Mint Aioli

Ingredients

• 600g chicken thighs
• 2 tbsp mustard oil
• 1 tbsp salt
• 2 tbsp garlic (minced)
• 2 tbsp ginger (minced)
• 4 tbsp yoghurt
• 2 tsp biryani masala
• 1 tsp red chilli powder
• 2 tbsp neutral oil (sunflower, vegetable etc)
• 500g brown onions (thinly sliced)
• 3 potatoes (cut into small cubes)
• All of the marinated chicken
• 1/2 tsp turmeric
• 1/2 tsp red chilli powder
• 1 cup (approx 200g) basmati rice
• 1 cup (approx 240g) water
• 1 tsp biryani masala
• 4 cloves
• 3 cardamom pods
• 1 cinnamon stick
• a pinch of saffron (in 10ml boiled water)
• to taste low moisture mozzarella
• 1 whole egg
• 150g breadcumbs
• 100ml neutral oil (veg or sunflower)
• 4 egg yolks
• 1/2 tsp mustard
• 2 garlic cloves (minced)
• to taste mint
• to taste corriander
• pinch of flakey salt