As an expert sommelier and brewer, I can provide you with a detailed answer to your question about the calorie content of zero sugar cream soda.
One of the reasons why zero sugar cream soda has no calories is because it is sweetened with artificial sweeteners instead of sugar. These sweeteners provide the sweet taste without adding any calories to the beverage. This makes it a popular choice for those who are watching their calorie intake or following a low-calorie diet.