How to Make It
In a small pitcher, combine the water and sugar and stir well to dissolve the sugar. Gently stir in the jasmine essential oil and lime juice.
In a pitcher, combine the vodka with the Grand Marnier and jasmine syrup. Add the ice and stir briskly until the glass begins to frost, then strain into chilled martini glasses. Top each drink with 1/4 cup of the club soda and garnish with a lime twist.
Pure jasmine essential oil is available at most health food stores and from essentialthree.com; 888-482-7662.