Place chickpeas, tahini, olive oil, lemon juice, garlic, and sea salt into your blender or food processor.
Begin blending on a low speed to incorporate the ingredients.
As the machine runs, slowly drizzle in the water, one tablespoon at a time, until the mixture is uniform, pale, and smooth.
Taste and adjust lemon juice or salt if preferred, then transfer to a bowl to serve.
Notes
For an even smoother texture, try removing the outer skins of the chickpeas before blending. Leftovers store well in an airtight container for several days.