Bring a large pot of salted water to a boil.

Meanwhile: On a clean work surface, roughly combine together cold mashed sweet potato, flour and salt (don’t knead yet). Make a well in the middle and add beaten egg.

Using a fork or your hand mix everything together first, then knead until dough is formed. This should not take about 2 minutes. It’s important not to overwork the dough.

Cut the dough into 8 pieces. Dust your work top with flour. Roll each piece into a sausage that is slightly thinner than a cigar. Now cut them into small pieces.

Cook in a large pot with salted boiling water. They are done when they float on the surface (this takes about 2 minutes or less).

Serve them either boiled or boiled and pan-roasted with a sauce of your choice. Green pesto and Parmesan are a great option.