Place the flour on a clean work surface and create a hollow in the center.
Break the eggs, place them in the center of the flour together with the sweet potato puree, and start beating them with a fork, incorporating more and more flour while you do that.
Once you have a well-mixed mixture, knead it with your hands for about 15 minutes until you have a smooth and elastic dough.
Wrap the pasta dough in cling film and let it rest in a cool dry spot in your kitchen, for 30 minutes.
Cut the dough in four equal pieces, leaving the remaining dough well covered to prevent it from drying out.
Sprinkle with a little flour a clean work surface, and roll the dough to create a thin sheet, about 42 cm/ 16-inch wide.
Dust the surface with a little more flour and roll the dough on itself, like a swill roll.
With a sharp knife, cut strips about 1 cm/ ⅓-inch wide in order to make tagliatelle pasta. Repeat the process with the remaining pasta dough.
Gently unroll the homemade pasta obtained, taking care to do it quickly to prevent the dough from drying out.
Cook the homemade sweet potato pasta immediately, or form little nests of pasta with your hands and arrange them on a tray dusted with semolina, to let them dry slightly. You can then store it in the fridge and use it within 12 hours, or in the freezer for up to 1 month.