Cod with Sorrel and Spinach Purée in Puff Pastry Packets

Although it is straightforward to make, this type of dish always looks impressive. Choose the thickest fillets of cod that you can find, or you can use other white fish, salmon fillets or smoked cod or haddock. The individual pastry packets can be made up in advance and kept in the refrigerator. I like to serve the cod with baby carrots or a tomato salad and new potatoes. If you can’t get sorrel, use just 750g<