Related Clues:

• Aerate, as flour
• Riddle provided in a way
• Pass though a sieve
• Make fine, as flour
• Use a sieve on
• Examine (eg evidence) discriminatingly
• Remove lumps from, as flour
• Make finer, in a way
• Sieve some crumbs if too big
• Cake recipe instruction
• ___ through (pore over)
• Separate, as flour
• Remove lumps from flour
• Put through a kitchen filter
• Search for gold, old-style