In the bowl of a food processor, combine the warm chickpeas, lemon juice, garlic, and ⅔ cup / 160 ml (5.4 fl oz) of water.
Purée for 3 to 4 minutes, scraping down the sides of the bowl as needed, until the mixture is completely smooth.
Add the well-stirred tahini to the food processor and purée for another 2 minutes until the hummus is light, fluffy, and has the consistency of soft cream cheese.
If the hummus is too thick, add 1 to 2 tablespoons (30 ml / 1 fl oz) of water at a time until you reach your desired consistency.
Season to taste with salt and pepper, if desired.
Serve immediately or store in an airtight container in the refrigerator.
Stir your tahini well before measuring. The oil can separate when it sits, and you want it fully incorporated for the best consistency.