Japanese-style chicken curry - Good Food Middle East

Ingredients

• 1 prepared roast chicken (see recipe below)
• 1 tbsp vegetable oil
• 2 onions, thickly sliced
• 2 large garlic cloves, finely grated
• 25g ginger, peeled and grated
• 45g unsalted butter
• 30g plain flour
• 1 tbsp medium curry powder
• ½ tsp garam masala
• 850ml vegetable stock
• 1 tbsp soy sauce
• 1 tbsp honey
• 2 tsp rice wine vinegar
• 500g Maris Piper potatoes, cut into eighths
• 3 large carrots, sliced on the diagonal
• cooked short-grain white rice
• sliced spring onions
• Japanese pickles (optional)