Nigella Lawson's Cranberry and apple chutney

Ingredients

• 4 to 5 cooking apples , peeled, quartered, cored and chopped small, about 4 1/2 cups
• 1 1/2 cups (375 mL) dried cranberries
• 1 onion , peeled and finely chopped
• 1 cup (250 mL) cider vinegar
• 1 cup (250 mL) super-fine sugar
• 1 tsp (5 mL) ground ginger
• 1 tsp (5 mL) ground turmeric
• 1 tsp (5 mL) ground cumin
• 1 tsp (5 mL) ground coriander
• 2 tsp (10 mL) Maldon salt , or 1 tsp (5 mL) table salt
• 4 1 cup (250 mL) sealable jars , with vinegar-proof lids