Notes
Relish:
Depending on how sweet vs. savory you like your Tartar Sauce, you can use all dill pickle relish, all sweet relish, or a 50/50 combination of the two (my family’s favorite).
Onions:
Sweet onion, like Vidalia, will add a milder onion flavor to the sauce. Yellow onion will be a bit sharper and more savory. Grate the onion on a microplane or the large holes of a box grater.
Dill, Lemon Juice, and Sugar:
I’ve given a range for these ingredients because the amount you need will vary based on the type of relish you’ve used (dill vs. sweet, as well as flavor variations between brands) and your personal sweetness/tanginess preferences.
Start with the smaller amounts listed of these ingredients and adjust as needed—it’s always easier to add more when seasoning than to take away!