2 carrots, peeled and roughly chopped
2 celery sticks, washed and roughly chopped
1 celery stick, finely chopped
½ garlic clove, crushed in salt
1 leek, washed and roughly chopped
20g/¾oz dried porcini mushrooms, soaked and finely chopped
1 small white onion, finely chopped
1 tsp chopped flatleaf parsley
200g/7oz spinach
250g/9oz carnaroli rice
sea salt and freshly ground black pepper
2 tbsp olive oil
1 tsp sea salt
75²µ/2¾´Ç³ú unsalted butter
75²µ/2¾´Ç³ú mascarpone
100²µ/3½´Ç³ú Parmesan, grated (or similar vegetarian hard cheese)