Mix the dough - Add the flour, eggs and sourdough starter to the bowl. Use the dough hook and knead the dough on low speed (not more than 2) until the dough forms a smooth ball.
Knead the dough - Turn the dough out on to the counter and gently knead it into a ball.
Ferment - Wrap the ball in plastic wrap and stash in the refrigerator overnight.
ROLLING, CUTTING, AND SHAPING SOURDOUGH PASTA - DAY 2
Bring dough to room temperature - Remove the dough from the refrigerator and let it come to room temperature.
Roll the pasta - You can use the pasta rolling attachment for your Kitchen Aid Mixer (according to the Kitchen Aid instructions), but I prefer to roll the dough out between two layers of plastic wrap to the desired thickness.
Cut and/or shape the pasta - Cut the dough to the desired shape/length, then hang it on a pasta hanger for at least 30 minutes to dry.
Boil the pasta - Drop the pasta into briskly boiling, salted water. Boil for 2-4 minutes and drain.