Soak the cashews overnight or for 4-6 hours.If you are in a rush, you may soak them in hot water for 30 minutes.You may even skip it, but it gets creamier and it tastes smoother after soaking.
Discharge the soaking water and rinse the cashews.
Blend the cashew with fresh water for 1 minute (or less), until smooth.
Drain the mixture (or skip it, if you don’t need your milk to be so smooth because you are using it only for baking and/or eating granola.