Rosemary and Clementine Whiskey Sour - Gourmantine Blog "To do so take: 1 part of rosemary syrup (bunch of rosemary brought to boil and left to infuse for 30 mins with 1 part water and 2 parts sugar) 1 ½ part whiskey, 2 parts clementine juice and 1 part lemon juice, stir it up and pour over ice!."