In a large bowl, mix the flour with the yeast, form a crater in the center, and add the lard or olive oil. Sprinkle salt around the edges. You can make the dough on a cutting board or using a stand mixer.
Start pouring the water into the crater a little at a time, mixing with a fork to incorporate the flour.
When you have added all the water, transfer the mixture to a chopping board and knead by hand for 3 minutes or until well blended and no longer sticky.
Using a pasta cutter or knife, cut the dough into balls of equal weight (for small crescioni to be used as appetizers, snacks, or aperitifs, about 70 g; for large crescioni to be served as a meal, about 150 g each).
Let rest for 30 minutes, covered with a clean cloth. This is not a true rising but a resting period. In the meantime, make the filling.