Salad returns: Tomato Egg Triple Onion Salad

Team salad is back at the lunch table. Tons of people visiting these days, so mass production needs resulted in this.

Tomatoes, lots.
Boiled eggs, many, where did they come from?
spring onions, chopped
a shallot, chopped
some chopped black olives
Pickled onions

Dressing:
Mayonnaise
Dijon mustard
olive oil
lemon juice
brown sugar
salt
some  balsamic marinade.
Some parsley or coriander.