Cicerone Certified Beer Server Practice Exam

When must a foam-on-beer detector be reset?

1. After Changing a Keg

2. After Service, at the End of the Night

3. Before Changing a Keg

4. Before Service, at the Beginning of the Day

The correct answer is: After Changing a Keg

The correct answer is that a foam-on-beer detector must be reset after changing a keg. This is essential because a foam-on-beer detector is designed to monitor the quality and consistency of beer being dispensed, particularly the balance between beer and foam. When a new keg is connected, the pressure and temperature conditions can change, potentially affecting how beer is poured. Resetting the foam detector ensures that it can accurately assess the new keg's pour characteristics from the moment it is tapped. Failure to reset the detector may result in it providing inaccurate readings, which can lead to issues such as excessive foam or improper beer flow. While it might seem reasonable to consider resetting the detector at other times, doing so only after changing a keg directly addresses the need to establish baseline readings for the specific beer being served from that keg, ensuring optimal performance and the best customer experience.