Add all ingredients to a small mixing bowl and whisk until completely combined. If the dressing is too thick, add more water one tablespoon at a time until it’s smooth and creamy.
Taste the dressing and adjust the flavor as needed, adding pepper, more lemon juice, etc. (Dressing should taste quite salty on its own. This will balance out when it's mixed into your salad.)
Refrigerate the dressing in an airtight container for up to a week. The dressing will thicken slightly when refrigerated, so you may want to stir in another tablespoon of warm water to thin it out when you use it straight out of the fridge.