 
                             
                                    
            - 1 leek
- ½ x 100g cheddar
- 1 egg
- 1 tbsp wholegrain mustard
- 1 tbsp cider vinegar
- 500g potatoes
- 2 gammon steaks
- 50g peppery salad mix
- Sea salt
- 11/2 tbsp olive oil
- Freshly ground pepper
- 1.Put a large pan of salted water on to boil. Heat your grill to high. 
- 2.Trim the roots and top 3cm off the leek. Halve it, rinse out any grit and then finely slice it. Warm a medium pan over a low heat for 2 mins, then add the leek and 1/2 tbsp oil. Season with a pinch of salt and pepper. Gently cook for 8-10 mins, stirring, till the leek is soft and lightly browned. 
- 3.While the leek sweats, coarsely grate half the cheddar. Beat the egg, mustard and 1 tbsp of the vinegar (keep the rest for later) together in a bowl till well combined. Stir in the cheddar. 
- 4.Line a grill pan or baking tray with foil. Lay the gammon steaks on a board and bash them with a rolling pin or a pestle to flatten them out a little, so they are around 1-2cm thick. Pop them on the grill pan or baking tray and slide under the grill. Grill for 10-15 mins, till they are lightly browned. 
- 5.While the gammon grills, scrub the potatoes and chop into bite-size chunks. The water should be boiling by now, so add the potatoes and simmer for 15-20 mins. 
- 6.While the potatoes simmer and when the leeks are soft and caramelised, take them off the heat and stir in the cheese and egg mixture. Season with a crack of ground pepper and mix well. 
- 7.The gammon should be browned by now. Take out from under the grill and use a spatula to flip them over. Spoon the cheese and leek mixture over the top of each gammon steak. Return to the grill and cook for another 8 mins till the cheese and leek topping is golden brown and bubbling. 
- 8.Whisk the remaining vinegar with 1 tbsp oil and a pinch of salt and pepper to make a dressing. Toss with the salad leaves. 
- 9.The potatoes should be tender and cooked. Drain them well and then serve them with the golden cheese and leek gammon grills and the salad. 
- TipMore cheese please 
 You can use all the cheese in this recipe for a blanket of cheesy topping on the gammon steak grills (it will affect the nutritional information). It will also keep in the fridge for a few days. You can use it to make this sauce again, using 1 egg, 1 tbsp mustard and 1 tbsp vinegar (or swap for 2 tbsp beer), and spread it over bread to make an extra luxurious cheese on toast.