Learn how to make gnocchi from scratch. Everyday Food editor Sarah Carey teaches you how to do it, step by step, from start to finish.
In a large pot, bring potatoes to a boil in salted water; reduce to a rapid simmer and cook until potatoes are tender when pierced with a knife, 35 to 40 minutes. Lightly dust two parchment-lined rimmed baking sheets with flour; set aside. Drain potatoes and peel while still hot with a paring knife (use a thick, dry kitchen towel or pot holder to hold them). Immediately pass potatoes through a ricer onto a work surface. Let cool completely.
Sprinkle potatoes with flour and 2 teaspoons salt, then top with egg. With your hands, work flour and egg into a dough.
Knead dough until smooth but not elastic, dusting with flour if it becomes too sticky, 4 minutes. Do not overwork dough.
Divide dough into 8 portions. Roll each portion into a rope (1/2 inch thick and 24 inches long). Cut each rope into 1/2-inch pieces.
Gently roll each dough piece against the back tines of a fork to make ridges, then arrange in a single layer on prepared baking sheets.
Bring a large pot of salted water to a boil. In batches, add a few handfuls gnocchi and cook until most have floated to top, 2 minutes. With a wire-mesh spider or a slotted spoon, transfer gnocchi immediately to a sauce.
Place boiled gnocchi on a rimmed baking sheet, drizzle with olive oil, cover, and let sit, up to 2 hours.