On a clean work surface, take the measured flour amount for either the whole wheat or white pasta option and make a well with your hand.
Next add the salt, sourdough discard and eggs into the center of the well of flour.
Slowly add the flour to the wet ingredients in the center and start mixing and kneading to incorporate all the ingredients.
Knead the dough for 5 minutes. The dough will seem dry but DO NOT add more water. It will incorporate at the end of the 5 minutes.
You can also do this part in a bowl of a stand mixer with a dough hook attachment. I prefer working with pasta dough with my hands, but the stand mixer would work too!
When you are done kneading the dough, place it tightly in plastic wrap or put it in an airtight container and let it rest for 30 minutes.
After the 30-minute rest take the dough and place it on a floured surface clean and using a rolling pin roll the dough out very thin. If it seems to have resistance, then let it rest for 5-10 more minutes and then finish rolling it after that.
Once you have it rolled out into a square or rectangular shape you can now cut and shape the pasta into the desired shape.