Answer:
What can be seen but never found that only hides in the unwound?
What is eaten but not grown and was born in water but will disappear if soaked?
What is made of wood but can't be sawed?
A harvest sown and reaped on the same day in an unplowed field. Which increases without growing, remains whole though it is eaten within and without. Is useless and yet the staple of nations.
Thousands lay up gold within this house, But no man made it. Spears past counting guard this house, But no man wards it.
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.