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["Into a large bowl or on a work surface, sift together the flour, cocoa, 3 tablespoons sugar, and salt.", "Make a well in the center and add the eggs a bit at a time, working them into the dry ingredients using a circular motion with your hands.", "Continue working in the eggs, and add the vanilla and oil, until a sticky dough is formed.", "Knead on a lightly floured surface until the dough is smooth and elastic, and is no longer sticky.", "(Alternatively, place the dry ingredients in the bowl of a food processor, add the eggs, vanilla and oil and pulse to form a ball of dough.", "Turn out onto a work surface and work to a smooth dough.)", "Cover with plastic wrap and let rest for 20 minutes.", "Divide the dough into 4 fist-sized pieces and flatten into disks.", "One at a time, roll out each dough piece through the widest setting of a pasta machine, according to the manufacturer's instructions.", "Remove, fold into thirds and repeat.", "Continue rolling through the machine on 4 times, dusting lightly with flour to keep from sticking.", "Decrease the roller size down 1 notch, and roll through once, passing the dough through each setting twice until the desired thickness is reached and cut into spaghetti strands.", "Let dry briefly while assembling the ""sauce.""
