Combine the flour and salt in a bowl. Make a well in the center, crack in the eggs, and gradually mix with a fork, pulling in the flour until a dough forms. Knead the dough on a clean surface for about 10 minutes, until smooth and elastic. Wrap in plastic wrap and let it rest for 1 hour.
7 ounces all-purpose flour, 2 eggs large, 1 teaspoon Kosher salt
Remove the dough from the wrap and divide in half.
Divide the dough into two portions. Keep one portion covered with a damp towel while you roll out the other. Lightly dust your work surface with semolina flour. Roll the dough into a rectangle about ½ inch thick. Pass it through a pasta machine, starting on the thickest setting and working to the thinnest, running it through each setting twice. Repeat with the second portion of dough.
Semolina flour
For the filling, mix ricotta, mozzarella, Parmesan, egg yolk, nutmeg, salt, and pepper in a bowl until smooth and creamy.
¼ cup fresh mozzarella cheese, ¼ cup Parmesan cheese, 1 cup ricotta cheese, 1 egg yolk, ½ teaspoon nutmeg, Salt and pepper
Lay one sheet of dough on a flat surface. Place spoonfuls of filling 2 inches apart along the sheet. Lightly wet the dough around each filling with water. Lay the second sheet of dough on top and press around the filling to seal, removing any air pockets. Use a ravioli cutter or knife to cut individual squares, then sprinkle lightly with flour. Let the ravioli dry for 30 minutes.
Bring a large pot of salted water to a boil. Cook the ravioli in batches for 2–3 minutes, or until they float. Remove with a slotted spoon and drain.
Serve immediately with melted butter, fresh herbs, or your favorite sauce.
Butter, Herbs