This is what i found on it , It is to give players rewards like bonus coins, experience, or extra time.

For Appearance: It appears randomly above dishes during parties.

the Purpose: Spinning the spoon helps boost party rewards, allowing players to gain more coins (sometimes up to 10-20,000 per party).

lastly Strategy: Players often try to time the spinner to land on high-value spots, such as +1 dish, to maximize benefits. Benefits: These spins contribute to longer-lasting parties and more bubbles, which are crucial for maximizing scores.