1. In a blender or food processor, whiz together the garlic, salt, tahini, olive oil, and lemon juice until the garlic is finely-chopped.
2. Add the chick peas, chile powder, and 6 tablespoons of chick pea liquid, and pulse until smooth. Stop the machine a couple of times during blending to scrape down the sides to make sure everything gets well-incorporated.
3. Taste, and add more lemon juice or salt if desired, and more of the chick pea liquid until it reaches a thick, but spreadable consistency. You can make it as smooth, or as coarse, as you want. I like mine mid-way between the two.