The term 'Turns Cod into Bacalao' is a reference to the traditional Portuguese method of preserving codfish. This method involves salting the cod and then drying it in the sun or air. The salt used in this process is referred to as 'SALTS' in the crossword solution, which has five letters. Salting the cod helps to preserve it for longer periods of time, allowing it to be stored and consumed at a later date.