To make rosemary simple syrup: combine ½ cup sugar and ½ cup water and ¼ cup chopped rosemary in a small sauce pan over high heat (the video says ½ cup, which will also work, but I use less). Bring it to a boil, stir and remove from the heat. Let it cool, then strain. this will keep refrigerated for 1 to 2 weeks.
Keyword friday cocktail hour, Gimlet, Gin, rosemary, simple syrup