Add all of the ingredients, except for the water, to a food processor and blend on high until smooth.
While the mixture is blending, in a thin and steady stream, add half of the ice water to the food processor*. If desired, skip this step by simply adding the water in with the ingredients in step #1.
Taste test the hummus. If too thick, add the remaining water. For a creamier consistency, add more olive oil and/or tahini. For more zest, add more lemon juice. Plate, garnish, and serve!
