Sift the flour into a large bowl. Add the yeast, oil, and pancetta, then gradually incorporate the water and finally the salt. Work the dough quickly, trying not to warm it too much, then transfer it to a work surface. Divide the dough into small pieces (larger than a walnut).
Shape long, thin rolls, lightly brush them with oil, then place them on a baking sheet lined with parchment paper and let rise for one hour. If you want, brush the surface with corn oil. Bake in a preheated oven at 210°C (410°F) for about 15 minutes.