Combine all the ingredients into a large saucepan and cover with
water. Leave to soak for 1 hour, drain and add fresh water to cover.
Leave for 2 hours then simmer for the next hour, stirring frequently to
prevent the mixture from catching, adding more water or wine as needed.
Remove from the heat and cool. Place in a blender or food processor and
roughly chop (don't puree') Pour into sterilized jars and store in a cool
place for 1 week before using.