How to make blackberry chutney

With the blackberry crop being so large this year, I had plenty to turn into chutney. And I have to say I was very pleased with the results. Here is my recipe:

• 1kg blackberries
• 1kg coarsely chopped apples (cored and peeled
• 0.5kg chopped onions
• 0.25kg sugar
• 3 tsp salt
• 2 tsp ground ginger
• 2 tsp mustard powder
• 1 tsp ground mace
• 1 tsp ground all spice
• 0.25 litre vinegar (I used our homemade elderflower vinegar)

Put all the ingredients into the preserving pan and bring to the boil. Simmer for a couple of hours - until the consistency is that of a thick sauce.