Put the dates in a small bowl and pour half of the orange juice over them. Put aside for a moment.
Put the cashews and the rest of the orange juice in your food processor and process until they are all mashed up and clump together in a ball (this took quite a while – at least 2 or 3 minutes).
Tip the cashew and orange mixture into a bowl. Then tip the dates/orange juice and sultanas into the food processor and process until they too are all mashed up and form a sticky ball (this probably won’t take as long as the cashews).
Add the mashed up dates/sultanas to the cashew/orange mixture in the bowl, then add the cacao and orange zest and mash everything together well until it resembles a thick chocolate cake batter.
Take teaspoons of mixture and roll into truffles. Finally, roll in raw cacao powder.