According to this BBC story, the United Kingdom's National Health Service has released a mobile phone application to help revelers monitor their holiday eggnog consumption:
The application, which can be downloaded from the NHS Choices website www.nhs.uk for Windows phones or from iTunes, requires drinkers to enter the number of drinks they consume each day.
The tracker can be downloaded on to mobile phones. It will then provide personalised graphs tracking drinking habits and make it clear by how much a person should cut down.
UK residents interested in keeping it moderate, so to speak, can download the application on the NHS Tools page.