Food Network teaches how to crush, slice and mince garlic. Peel off some of the papery skin from the garlic and then smash the head of garlic with the heel of your hand to loosen the cloves; if you only need a few cloves, leave the head intact and pull some off. Separate the cloves. To peel a clove, cut away the root end with your knife. Lay the flat side of the knife over the clove while holding the knife handle, then with the heel of your free hand carefully whack the knife against the garlic to separate the skin from the clove. To crush the peeled garlic, lay the flat side of the knife over the clove and smash it again. To slice peeled garlic, lay the clove flat on the cutting board and hold it with the fingertips of one hand, keeping them curled under. Using a rocking motion with the knife, make thin slices by moving the knife slowly across the clove. To mince peeled garlic, lay the flat side of a knife over the clove and smash it. Roughly chop the clove then move your free hand flat across the tip of the knife and use a rocking motion to chop the garlic until it’s finely minced.
Place the chickpeas, garlic, and kosher salt in the bowl of a food processor. Process for 15 to 20 seconds. Stop, scrape down the sides of the bowl, and process for another 15 to 20 seconds. Add the lemon juice and water. Process for 20 seconds. Add the tahini. Process for 20 seconds, then scrape down the sides of the bowl. With the processor running, drizzle in the olive oil.
To serve, transfer the hummus to a bowl and drizzle with additional olive oil and sprinkle with sumac, to taste, if desired.
Slow Cooker Chickpeas:
Place the water, chickpeas, and baking soda in a 2 1/2-quart slow cooker. Cover and cook on high heat for 4 hours, or on low heat for 8 to 9 hours, or until tender. Drain and serve immediately, or use in desired dish.