New Potato Salad with Eggs, Peas and Mayonnaise

If you have mastered mayonnaise - and you should because even the best bottled is no substitute, as well as costing more - salads like this are splendidly tolerant and can be stretched to feed more faces by bumping up the potato and egg ratio, or adding some other ingredient to hand, such as cooked broad beans, or green beans, diced raw peppers, sliced radish and so on, not forgetting diced raw fruit, apple maybe, or a few chopped nuts. The staple ingredients are the waxy new potatoes, chop