Brioche au Rhum

Brioche au Rhum

Meanwhile, cook sugar, rum, orange zest, and salt in a medium saucepan over medium heat 5 minutes. Reduce heat to medium-low and simmer, stirring occasionally, 6 minutes. Pluck out and discard orange zest. Add vanilla and let syrup cool slightly. Transfer ½ cup syrup to a bowl; reserve the rest for serving.