In a large mixing bowl combine the pumpkin, sweet potato, and egg. Stir to combine.
In another bowl whisk the salt and the flour together. Pour this mixture over the egg mixture and fold the ingredients together until completley combined. Do not stir! You do not want to overwork the dough. Just keep folding and the dough will come together, work with your hands if desired.
Once the dough has come together transfer to a well-floured surface and divide into 4 equal portions about the size of a softball. Cover with damp paper towel until used.
Working quickly, roll each ball of dough into a long thin rope about 1-inch thick. Use a damp paper towel placed over the ropes of dough to keep them from drying out while you work through the remaining pieces of dough.
Cut down the length of each rope, dividing it into 1-inch pieces.
To create the classic gnocchi shape, slide the gnocchi over the tines of a fork creating indentations, or use a Cavapatti paddle or something similar - see our blog post.