Not only is this classic cocktail one of the oldest recipes in the book—it dates back over 200 years—it's also one of the lowest calorie drinks you can order at the bar, as it's free from any mixers, syrups or fruit juice. 

Get it at: Ronin, 8 On Wo Lane, Sheung Wan, roninhk.com

See also: Here’s Why Champagne Barons de Rothschild Is A Cut Above The Rest

A simple mixture of gin and vermouth, martinis—like the old fashioned—are low calorie thanks to the absence of any mixers. Ordering a "dry" martini means more gin and just a splash of vermouth, and if you want to skip the sodium from the olives, ask for your martini "with a twist" for lemon instead. 

Get it at: The Old Man, Lower G/F, 37 Aberdeen Street, SoHo, Central, theoldmanhk.com

This refreshing drink is a summer staple. Traditionally, this timeless cocktail comes with vodka, ginger beer, lime and sugar syrup—but if you ask your bartender nicely to skip the syrup, a Moscow Mule clocks in at around 100 calories. 

Get it at: Otto e Mezzo, Shop 202, 2/F Alexandra House, 5-17 Des Voeux Road, Central, ottoemezzobombana.com

Ask for extra Tabasco, as registered dietitian Abbey Sharp of Abbey's Kitchen says, "when a drink is super spicy, it slows down my drinking and encourages me to have a sip of water between each sip of alcohol."

Get it at: Commissary, Shop 405, 4/F Pacific Place, 88 Queensway, Admiralty, commissaryhk.com

See also: Daniel Eun Of 11 Westside: 10 Tips On How To Stock Your Home Bar