Blitz cashews in your hand blender for 10 seconds or so until fine. 
Blending them before adding the other ingredients will help you to get a smoother sauce. (If you have a high speed blender, then you can skip this step and just whiz everything up together!)
Add remaining ingredients and blend thoroughly. 
Add a little milk for a thinner salad dressing consistency - less for a thicker sauce or dip. 

As with all of our sauce recipes...
if you have a high speed blender you'll achieve a silky smooth sauce, but no matter if you have a standard stick blender - a little bit of texture is no bad thing! 

Keep in the fridge for up to 4 days. 
Suitable for freezing - a perfect re-use idea for our Flavour Pots containers. 
Alternatively, use a silicone ice cube tray for single servings.