Tartar sauce is a variation of sauce Remoulade. Google. Capers, shallots and gherkins or cornichon pickles in an aioli (or Mayo, not miracle whip) spiked with herbs including dill and sometimes tarragon, or whatever, usually hit with lemon juice more so than cider vinegar or any vinegar.
and horseradish.
I won’t fight you on that, but where I hail from, the horseradish is usually saved for Tartar sauce’s ubiquitous companion sauce - “Cocktail”.
