Add the potatoes to a saucepan full of salted water to cover by inch over the potatoes. Bring it to a boil and let it boil until a knife easily passes through the potatoes. It will take about 20-30 minutes.*
Using a tongs, remove the potatoes from the saucepan onto a chopping board. Carefully peel the skin off and discard it. (Using the help of tongs and gloves if necessary)
Once all the potatoes are peeled, roughly chop them up and mash it down using a potato masher or pass it through a potato ricer. There shouldn't be any lumps.
Immediately spread it across the board to let the excess moisture evaporate. Let it sit for 5 minutes. *
Sprinkle the parmesan, pepper powder and salt. Mix to bring it all together. Taste and adjust seasonings.
Next add the egg and mix it thouroughly. Scraping it with a dough scraper whenever necessary.
Finally add the all-purpose flour and cut it through the potatoes using the scraper. Mix it ONLY until the dough comes together. Do not overwork it.*
Divide the dough into 8 portions. Roll each portion into a thin long logs. Cut each log into 1.25-inch pieces using the dough scraper.
Repeat until you've cut all the logs. At this point you can cook the gnocchis or freeze them for later use!