Cover that cashews with at least 2 inches of fresh water and soak overnight (minimum 8 hours).
Drain, then combine with 4 cups of fresh water and the salt in a high powered blender. Blend on high for one minute, or until very smooth. Drain through a nut milk bag, or cheesecloth.
Return the milk to the blender, and add strawberries. Again, blend until very smooth and pass through the same (cleaned out) nut bag.
If you want a sweeter end result, add honey (and blend or mix to combine) to taste.
Keep in an airtight container in the refrigerator.
Recipe by The Kitchen Paper at http://c02.ddd.mwp.accessdomain.com/strawberry-cashew-milk/