Possible Clues:

• With OAP onset, use it to stir
• Small stirrer — not Aesop! (anag)
• One creating a stir in the cup?
• Stirring part of service
• A pot's one unusual kitchen item
• European snake in Geordie town? That causes a stir
• One of about 500 million needed to fill an Olympic swimming pool
• One stirs shortly after meal, papa assumed
• Stir one's pot with a piece of cutlery
• Might we need this one as pot boils?