In a medium bowl, whisk together the tahini, lemon juice, water, garlic, and salt. (The tahini will seize up into a thick paste when the liquid is first added, before becoming smooth and silky when fully combined.)
Adjust the consistency of the sauce by adding more water as needed. Adjust the flavor by adding more lemon juice or salt.
Notes
If the sauce is too tangy or sharp tasting, add an additional pinch of salt or a teaspoon of olive oil.
If the sauce is bitter tasting, add ½ teaspoon of maple syrup or honey.
If the sauce is too thick, add more water, a teaspoon at a time, until it has reached your desired consistency.
This recipe makes about 1¼ cups of tahini sauce (3 to 4 tablespoons per serving).