The term 'Parisian Roast' refers to a type of coffee that is roasted in Paris, France. It is a light roast with a mild flavor and a slightly sweet aftertaste. The word 'ROTI' is the four-letter solution to this crossword clue, which is an acronym for 'Roasted Over Traditional Iron'. This method of roasting coffee beans over an open flame has been used in Paris for centuries and is still used today.