Mustard, believe it or not....
or smashed up avacado, or hummus.
If you don't use mustard, add ground turmeric (for health, not taste).
If you want taste, add a dash of dried chili pepper and cumin.
Get a packet of Mediterranean salad with Balsamic Vinegar,
I packet does 2 or 3 5 ounce tins.
Add a dash of red wine vinegar.
Tasty and quick snack.