Wondering what's in tartar sauce? It's typically made with mayonnaise, chopped pickles or relish, lemon juice, and herbs (like tarragon and dill). There are also a handful of optional ingredients you can add that take the tartar sauce's flavor to the next level. For example, this recipe includes yellow mustard.

The yogurt makes this recipe for tartar sauce extra-tangy and creamy. These other key ingredients amp up the flavor even more: Lemon juice – It makes the sauce nice and bright. Capers and diced dill pickles – They add salty, briny flavor.

Tartar sauce is relatively high in fat—especially when compared to other condiments served with fish, such as ketchup or vinegar. There are 4.7 grams of fat in a serving of tartar sauce. About 0.9 grams is saturated fat. About 1 gram is monounsaturated fat and 2.5 grams are polyunsaturated fat.

And a few people wanted to know if tartar sauce was the same as cream of tartar. And actually Tartar Sauce doesn't contain any cream of tartar. It's a mayonnaise based sauce named after the Tartar family.