Place chickpeas, garlic, lemon juice, tahini paste, (pickle juice if using) & salt in a food processor or blender and blend it for some time until MOST of the chickpeas have broken down.
You need to stop a few times to scrape down the sides.
Now with the machine running, drizzle olive oil through the chute of the processor or top of the blender.
Stop and then scrape the sides again making sure no chunks are present.
Now again with the machine running, add ice cubes and keep blending for 4-5 minutes.
Slowly add the chickpea water (if needed) until the desired creamy texture is achieved.
At this point paprika powder or jalapeno paste can be added if using.
Continue blending for at least 5 minutes more, stopping in between if the machine starts to warm up. This will ensure the smooth creamy consistency of the hummus.
Once done, spread on a serving plate, drizzle olive oil and sprinkle sumac or paprika powder.
Leftovers should be stored in the fridge. Flavors develop over time.