The crossword solution for the term PREPARE, AS FLOUR is SIFT. Sifting is a process used to separate out lumps and debris from flour before it is used in baking. It is done by passing the flour through a sieve or sifter, which is a device with a mesh bottom that allows the flour to pass through while trapping any lumps or debris. Sifting is an important step in baking as it helps to ensure that the flour is light and airy, which is necessary for a good end result.