Mix: In a food processor, combine soaked and drained chickpeas, garlic, onion, parsley, lemon zest, lemon juice, cumin, coriander, salt, black pepper, cayenne, and 1 tablespoon (15ml) of the grapeseed oil. Pulse until chickpeas are finely minced and well mixed, scraping down the sides as needed. (The mixture should loosely hold together when squeezed together with your fingers. If not, process a bit more. See note 2)
4 cloves garlic, minced, ¾ cup diced yellow onion, 1 cup packed flat-leaf parsley, 1 teaspoon lemon zest, 4 teaspoons lemon juice, 2½ teaspoons ground cumin, 1½ teaspoons ground coriander, 1½ teaspoons fine sea salt, ½ teaspoon black pepper, ¼ teaspoon cayenne, 3 tablespoons grapeseed oil, divided