Add the Tahini, Rice Vinegar, Miso Paste, and Maple Syrup to a large bowl and mix to form a thick, even paste.
Slowly pour in the filtered water while you whisk the mixture. Continue to whisk until evenly incorporated, then serve as desired. Leftovers will keep in the fridge for up to 2 weeks.
Notes
Not all Tahini is created equal – this brand is my favorite, and is much runnier (and less bitter) than a lot of other brands. If you use a different variety of Tahini you may need to use more filtered water.
Shiro Miso Paste can be replaced with another variety of mellow miso – Chickpea Miso would work great here if you are soy-free!