Step 1

Add all ingredients to a large saucepan and mix together until smooth.

Step 2

Cook over medium heat, stirring frequently, until mixture comes to a boil, then reduce the heat and simmer for 20 minutes or up to one hour, stirring occasionally.

Step 3

Remove from heat and allow to cool. The sauce will thicken slightly as it cools.

Step 4

Store in an air tight container or jar in the fridge for up to 3 weeks.