One of the highest levels of sugar is found in Old Jamaica Ginger Beer. Its Extra Fiery drink has 15.7g - or just under four teaspoons - of sugar per 100ml. The recommended maximum daily sugar intake for someone over the age of 11 is 30g a day, or 7.5 teaspoons.
Calorie counts vary by product. One brand of non-alcoholic ginger beer contains about 16 calories per ounce, or 128 calories in an 8-ounce glass. One brand of alcoholic ginger beer contains 255 calories per 500 milliliters, which is about 17 ounces. That works out to about 15 calories per ounce.