This a nice easy way to use leftover roast pork or roast beef, and leftover potatoes. Make a vinaigrette dressing with olive oil and wine vinegar. Cut the pork into small cubes and add to dressing. Tonight we had leftover boiled potatoes and leftover roasties. We cut these into small cubes and mixed with the pork. We served the mixture on plain lettuce leaves. You can dress this up more if you like, maybe add mustard or chopped herbs or chopped onion. It's also good mixed with mayonnaise and yoghurt instead of the vinaigrette.