Put the chickpeas, tahini, cumin or paprika, oil, garlic and lemon juice in a food processor, sprinkle with salt and pepper and begin to process; add chickpea-cooking liquid or water as needed to produce a smooth purée.
Taste and adjust seasoning, adding more salt, pepper or lemon juice as needed. Serve, drizzled with some olive oil and sprinkled with a bit of cumin or paprika and some parsley.
