Wash, pit and halve the apricots. Break the cinnamon bark into 3-4 pieces.
Mix the apricots and cinnamon bark with the sugar and leave to stand in a cool place overnight.
The next day, bring to a boil and allow to reduce slightly, add the citric acid and then immediately pour into clean glasses.
Put 1/2 tsp of rum on each glass, light and seal immediately.