Crossword Genius

Aerate, as flour (4)

Ross

I believe the answer is:

sift

(Other definitions for sift that I've seen before include "Examine minutely" , "Make fist of filter" , "Sieve finely" , "Winnow out" , "Separate by passing through fine mesh" .)

I've seen this clue in the LA Times and the Universal.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.