2 carrots, finely chopped
2 celery sticks, finely sliced
1 garlic clove, crushed
2 leeks, finely sliced
6 portabellini mushrooms (or any large flat mushrooms)
1 red pepper, seeded, finely sliced
4 red onions, finely chopped
285g/10oz basmati rice
1 x tin 400g/14oz butter beans, rinsed and drained
1.75 litres/3 pints chicken stock
1 x tin 400g/14oz canned chopped tomatoes
drizzle of olive oil
2 tbsp soy sauce
10 chicken thighs, on the bone, skin removed