Soak the Cashews in a bowl and cover with water by an inch, then cover and soak at room temp up to 4 hours, and put in the refrigerator if soaking overnight. If you're in a hurry you can soak them for 15 minutes in very hot but not boiling water.
Steam the Cauliflower until just soft but not over cooked
Blend cauliflower in a blender using a little lemon jice and add remaining ingredients.
If you have a Green Power juicer use that instead. And voila you have an incredible healthy alternative to potatoes.