chickpeas, rinsed and drained, or 1 ½ cups cooked chickpeas • baking soda (if you’re using canned chickpeas) • lemon juice (from 1 ½ to 2 lemons), more to taste • medium-to-large clove garlic, roughly chopped • fine sea salt, to taste • tahini • ice water, more as needed • ground cumin • extra-virgin olive oil • Any of the following garnishes: drizzle of olive oil or zhoug sauce, sprinkle of ground sumac or paprika, chopped fresh parsley