Combine syrup, lime juice, minced ginger, bourbon and ginger ale in a cocktail shaker then give it a good rattle.
If possible, let mixture chill in the freezer for 2–4 minutes, until very cold. Pour in a glass packed with ice then garnish with a fresh lime wedge, if desired.
Notes
A traditional nor’easter cocktail does not come with a sugar-rimmed glass, but we thought it was fun and it tasted good too!