Combine. In the bowl of a food processor or a high-speed blender, combine the drained chickpeas, tahini, olive oil, lemon zest, 3 Tablespoons lemon juice, 3 Tablespoons of water, 1/4 teaspoon kosher salt, and the cumin.
Puree the hummus, adding more water, if needed, to thin out the hummus (I like to add 5 Tablespoons of water total for a smooth, creamy texture.) If using a food processor, you may need to stop and scrape down the sides of the bowl a few times.
Taste & Adjust. Taste the hummus and add more lemon juice, salt, or cumin, to taste.
Serve & Store. Add any desired garnishes and enjoy right away, or cover the hummus and store in the refrigerator 3-4 days. Enjoy with fresh veggies, crackers, pita chips, pretzels, etc.
Keep in mind that for food safety, hummus should only be out at room temperature for a maximum of 2 hours. Store it in the fridge for best results!