When the eggplant is cool enough to handle, remove to a cutting board, make a cross-cut to open, and scoop out 1 cup of the flesh into another bowl. Add a pinch of salt and ¼ cup Basic Tahini Sauce and mix. Grate in about ¼ teaspoon garlic, followed by the olive oil, and mix again. Garnish with more Basic Tahini Sauce, pine nuts, cherry tomatoes, salt, sumac, parsley, and more olive oil, and serve. (Note: Video for how to make the Basic Tahini Sauce can be found in Michael Solomonov's Hummus recipe.) To make the Basic Tahini Sauce: Break up the head of garlic with your hands, letting the unpeeled cloves fall into a blender. Add the lemon juice and ½ teaspoon salt. Blend on high for a few seconds until you have a coarse purée. Let the mixture stand for 10 minutes so the garlic can mellow.Pour the mixture through a fine-mesh strainer set over a large mixing bowl, pressing on the solids to extract as much liquid as possible. Discard the solids. Add the tahini to the bowl, along with the cumin and 1 teaspoon salt. Whisk the mixture until smooth; the sauce will lighten in color. Whenever the tahini seizes up or tightens, add ice water bit by bit (about 1.5 cups in total), whisking energetically until you have a perfectly smooth, creamy, thick sauce.