I made this salad a few times when I was in England, as new potatoes were in season, and also because it's a substantial salad that feeds a lot of people.
I got the idea from my friend Sherralee who made a version of it last Christmas.
Boil some new potatoes, (or small potatoes if they are unavailable) halving any larger ones. Fry some sliced mushrooms, adding a dash of balsamic vinegar at the end for extra flavour. Put potatoes and mushrooms into a big salad bowl.
Then add any other ingredients you like, eg halved cherry tomatoes, chopped cucumber, chopped celery, sliced red onion, olives, salad leaves, fresh herbs. Add a little garlic oil and toss through with your hands. You can top with some sliced boiled eggs (yolks still a little runny) at the last minute if you have time.