Set pressure cooker to "sear", add oil, and press "start/stop". When hot, add eggplant and garlic. Sauté 5 minutes.
Add water. Close and lock lid. Set pressure cooker to "steam/veggies" and press "start/stop".
When done, quick release and make sure all pressure is released before opening lid. Carefully open and strain eggplant and garlic.
Place into a blender or food processor. Add parsley, salt, lemon juice, and tahini paste. Blend well. Season to taste, if necessary.
Serve with pita bread or vegetables.