Cointreau is a premium brand of triple sec, an orange-flavored liqueur made from the dried peels of Curacao oranges. Cointreau is produced in France at the Remy Cointreau distillery. There are fewer calories in an ounce of Cointreau than in an ounce of a typical triple sec liqueur.

A night on the town doesn't need to derail your diet -- as long as you choose your cocktails carefully and consume them in moderation. One way to go is to order a vodka soda.

Southern Comfort is a sweet bourbon flavored liqueur that originated in New Orleans. Southern Comfort has a higher congener content than clear alcohol, so it is more likely to cause a hangover, according to the Mayo Clinic website.

Vodka is considered hard liquor, a popular term for whiskey, tequila, rum, gin, vodka, and other distilled spirits. The "proof" is the percentage of alcohol in the liquor. Vodka labeled 80 proof contains 40 percent alcohol, while 100-proof vodka contains 50 percent alcohol.

Burnett's vodka is a brand of distilled vodka bottled by the Sir Robert Burnett Co. in Kentucky. Available in many different flavors, Burnett's vodka can easily be used to make martinis and other mixed drinks.

Everclear is a brand of vodka known for its high alcohol content. Most vodka brands are 40 to 60 percent alcohol, which is 80 to 120 proof. Everclear offers two varieties: Everclear 190 proof, which has 95 percent alcohol content, and Everclear 151 proof, which has 75.5 percent alcohol content.

While the number of calories in pure vodka is based solely on its alcohol content, flavored vodkas like Smirnoff Vanilla get their calories from the alcohol and the included flavoring, and therefore have more calories than pure vodkas with the same amount of alcohol.

When you mix 7UP diet soda with vodka, the majority of the calories come from alcohol. Although the label on diet 7UP does not reflect a calorie content, when more than one serving is consumed, it does contain calories.

The calories in a vodka and Diet Coke mixed drink will depend on the brand and type of vodka. Diet Coke does not add any calories to the drink, making it a popular mixer.

Jack Daniel's is a brand of whiskey introduced in 1886. Popular as a beverage and as a marinade for meats, Jack Daniel's is fairly low in calories by the ounce. Consume Jack Daniel's in moderation to keep calories low.

Guinness is an Irish stout and was first brewed at St James’ Gate Brewery in Dublin in 1759. It is made from four ingredients: barley, hops, water and yeast. A bottle of Guinness contains fewer than 150 calories.

As a rule, alcohol contains 7 calories per gram. Therefore, the number of calories in your favorite vodka brand depends on the amount of alcohol it contains. Smirnoff Vodka makes varieties of vodka that range from 40 to 50 percent alcohol by volume, or ABV.