Hummus For Real

INGREDIENTS

• 5 tablespoons freshly squeezed lemon juice
• Special equipment: a 2 1/2-quart slow cooker
• 1/3 cup tahini, stirred well
• 1/4 cup water
• Powdered sumac, optional
• 1/4 cup extra-virgin olive oil, plus extra for serving
• 7 cups water
• 1/4 teaspoon baking soda
• 1 pound dry chickpeas, sorted and rinsed
• 2 cloves garlic, minced
• 1 1/2 teaspoons kosher salt
• 1 pound Slow Cooker Chickpeas, cooled, recipe follows