Cook the potato with the skin on in water for about 20 minutes.
Wait for it to cool and knead until it forms a puree.
In a bowl, mix the flour, the flour, the oil, the pepper and the
salt and knead with your hands until a non-sticky dough forms.
On a bench sprinkled with rice flour, shape the dough into strips.
Cut the cubes and sauté in the skillet with the butter until golden.
Add your favorite sauce.
Tip: It goes very well with pesto sauce.