Place the cashews into a blender or food processor, and blitz until you have a fine meal.
Add the water, a little at a time, and continue to process until the cashews form a thick cream.
Add the rest of the ingredients, and blitz again for 30-60 seconds, until you have a coarse paste.
Serve with your favourite pasta, on top of baked potatoes, on pizza, or anywhere you'd usually use pesto.
For added decadence, sprinkle over a couple of spoonfuls of my vegan parmesan.
