Complex sentence: The traditional Indian meal was roti and beans, but rotis tended to fall apart as a take-away item, so they cut out the centre portion of the bread and filled it with curry and capped the filling with the portion that was cut out.
Split into simpler sentences: The traditional Indian meal was roti and beans, however rotis tended to fall apart as a take-away item. So they cut out the centre portion of the bread and filled it with curry and capped the filling with the portion that was cut out.