Based on the context and the answer, generate a question. 

Context: Then add flour until dough leaves the side of the pan . Let rise 4 hrs or overnight [ with a wet towel over them -- this is not a part of the printed version but a key part in how she taught me to do it so you do n't get a dried skin on top ] . Roll out in desired shapes . Place on greased cookies sheet or muffin pans .

Answer:

The dough will be hard and dense .



What may happen if it does not rise ?