200g/7oz chestnut mushrooms, sliced
1 onion, finely chopped
1 tbsp chopped fresh parsley
1 tbsp chopped fresh tarragon
60g/2oz basmati rice
salt and freshly ground black pepper
sesame seeds, to sprinkle
pinch turmeric
60g/2oz butter
2 free-range eggs, hard-boiled, chopped
1 free-range egg, beaten
250g/9oz ready-rolled puff pastry
600g/1lb 5oz ready-cooked salmon fillets, flaked