Placing a wooden spoon across the top of a pasta pot is a time-tested trick to prevent boil-overs. The spoon works by cooling off the rising foam bubbles, offering a temporary solution. Though effective for a short while, it eventually warms up and loses its magic. For a more durable solution, consider using a larger pot or reducing the heat.source https://timesofindia.indiatimes.com/life-style/home-garden/put-a-wooden-spoon-across-a-boiling-pot-the-viral-kitchen-trick-explained/articleshow/133603150.cms