Add the baking soda to the chickpeas and place them in a medium-sized saucepan. Bring the mixture to a rolling boil on high heat, covering the chickpeas with several inches of water. Continue boiling for 20 minutes or until chickpeas appear bloated and their skins start to fall off. Drain the chickpeas in a fine mesh strainer and then run cool water for 30 seconds over them. Remove the chickpeas from the strainer and set aside. ).
In the meantime, add the garlic, lemon juice and salt to a high-powered food processor. Process the garlic until it is finely chopped. Let the mixture sit for 10 minutes to allow the flavor of the garlic to mellow.
Add the tahini and process until it is creamy and thick. Stopping to scrape any tahini that has stuck to the sides or bottom of the processor if necessary.
Pour 2 tablespoons of ice water into the food processor while it is running. Blend until the mixture becomes ultra-creamy, pale, and smooth. If your tahini is extra thick, you may need to add up to 2 tablespoons of ice water.
Add cumin to the food processor along with the chickpeas that have been overcooked and drained. As you blend, drizzle the olive oil. Blend for 2 minutes until mixture is smooth. Scrape down the sides as needed. If necessary, add more ice-cold water by the teaspoon to get a super cream texture.
Add more lemon juice or salt to taste.
Use a spoon and create a nice swirl on the top. Serve with your favorite garnishes. Covered, leftover hummus can be stored in the fridge for up to a week.