Step 1

Add the brown sugar, water, cinnamon and salt to a small pan. Stir to combine.

Step 2

Bring to a boil then turn to a gentle simmer, stirring or swirling occasionally, for 10 minutes. By then it should have visibly reduced by about half.

Step 3

Remove from the heat, allow to cool a little, then pour into a small jar or other heat proof lidded container.