Place onion, garlic, apple, carrots and dates into the Thermomix bowl and chop 3 sec/speed 6.
Add all remaining ingredients and cook 60 min/Varoma/Reverse/speed 1 with the Varoma dish on top to prevent spatter.
Meanwhile, sterlise jars.
Cook a further 30 min/100°C/Reverse/speed 1 with the Varoma dish on top to prevent spatter.
While still hot, decant into sterilised hot jars and seal. Allow to come to room temperature before refrigerating.