Calories in peppermint schnapps?

Calorie Content of Alcoholic Beverages
One gram of ethyl alcohol yields 7 calories of energy when metabolized by the body. That converts of approximately 200 calories per ounce of absolute alcohol, or about 100 calories per drink equivalent (one-half ounce of absolute alcohol). The total calorie content of an alcoholic beverage includes the calories from the alcohol itself, and calories from other components of the beverage (residual sugars or grains in beers and wines, for example). A typical serving of regular beer yields about 150 calories (about 100 calories from the alcohol and about 50 calories from the residual carbohydrates). A typical serving of light beer has a lower alcohol content and less residual carbohydrates, so the total calorie content could be about 100 calories (about 80 calories from the alcohol and about 20 calories from the residual carbohydrates).
SOURCE: www.google.com/#q=calories+in+ethyl+alcohol

A fifth is 25.6 ounces, which is 12.8 ounces alcohol at 100 proof, so 1280 calories per bottle.