1000 grams flour, preferably tipo 00, plus more for shaping dough
4 teaspoons fine sea salt
1/2 teaspoon active dry yeast
Whisk flour, salt, and yeast in a medium bowl. While stirring with a wooden spoon, gradually add 3 cups water; stir until well incorporated. Mix dough gently with your hands to bring it together and form into a rough ball. Transfer to a large clean bowl. Cover with plastic wrap and let dough rise at room temperature (about 72°) in a draft-free area until surface is covered with tiny bubbles and dough has more than doubled in size, about 18 hours (time will vary depending on the temperature in the room).
Transfer dough to a floured work surface. Gently shape into a rough rectangle. Divide into 6 equal portions. Working with 1 portion at a time, gather 4 corners to center to create 4 folds. Turn seam side down and mold gently into a ball. Dust dough with flour; set aside on work surface or a floured baking sheet. Repeat with remaining portions.
Let dough rest, covered with plastic wrap or a damp kitchen towel, until soft and pliable, about 1 hour. Wrap each dough ball separately in plastic wrap and chill.