Add the drained chickpeas, tahini, lemon juice, minced garlic, cumin (if using), and salt to a food processor or high-powered blender.
Process for 20–30 seconds until roughly combined. Scrape down the sides.
With the processor running, slowly drizzle in the olive oil and then the cold water (or aquafaba) 1 tablespoon at a time until the hummus becomes super smooth and creamy (usually 2–4 tablespoons total). Blend for 2–5 minutes total — the longer you blend, the creamier it gets!
Taste and adjust: Add more lemon juice for brightness, salt for flavor, or a splash more water if it's too thick.
Transfer to a serving bowl. Make a swirl on top with the back of a spoon and drizzle with extra olive oil. Sprinkle with paprika, parsley, or other garnishes if desired.
Serve with pita bread, fresh veggies, or as a spread. It keeps in the fridge for up to 5–7 days.