Preheat oven to 400 degrees F (200 degrees C). Lightly grease a baking sheet.
Place eggplant on baking sheet, and make holes in the skin with a fork. Roast it for 30 to 40 minutes, turning occasionally, or until soft. Remove from oven, and place into a large bowl of cold water. Remove from water, and peel skin off.
In cuisinart, mince garlic and cilantro. Add eggplant, lemon juice, tahini, and cumin. Puree.
