Put all the ingredients into a large wide mouthed saucepan or large pot and bring to the boil with the lid off.
Allow it to simmer for about 35 - 45 minutes (depending on the size of the pan) and until it has thickened and formed a jammy consistency.
Allow to cool and spoon into sterilised jars and seal. See instructions in the cooks notes on how to properly process the filled jars to preserve them.