Step 1

Place mussels and cider or wine in a wide, shallow pan. Cover and place on a high heat for 3-4 mins, shaking pan a few times until mussels have opened. Tip into a colander over a bowl to catch the juices. Discard any that have not opened.

Step 2

Place the pan back on the heat with a large knob of butter. Sizzle the leeks for 8 mins until soft, then add the mushrooms. Add the mussel cooking liquid and crème fraîche and bubble down for 5 mins to reduce by half. Turn down the heat and add the fish. Cover and gently poach for 10 mins until cooked, then carefully lift out. Stir through the mussels and parsley and heat through.

Step 3

If you want, place the fish back in the pan to serve from the table or place a piece of fish in each serving bowl and spoon everything else around it. Delicious served with boiled waxy potatoes, such as Pink Fir Apple.