My mother dressed every salad – cooked or raw – in the same way. A little finely chopped onion, vinegar, a good dollop of mayonnaise , olive oil, salt and pepper were mixed together in the bottom of the serving bowl and left to stand for a few minutes. The vegetables or salad were then folded in. My only variation is to sometimes substitute yoghurt with mayo… and not to dress EVERY salad this way!
However last night I had some left over boiled french beans and mayo, so I steamed a few potatoes and made Mother’s salad. I added a few cherry tomatoes too.