Bring the apple juice to the boil in a large pan.

Simmer the apple juice for 30-60 minutes until it changes colour and thickens.

Test the syrup be placing a teaspoon of apple juice on a plate, wait until it cools to check the thickness.

Turn the heat off when the syrup reaches the desired consistency.

Pour straight into a jar and allow to cool. (Carefully. It is very hot)

Store in the fridge.

When you want to use it, if you want to soften it, place the jar inside a bowl of boiling water until it melts slightly (if required).