Soak the almonds, unpeeled, for 12 hours or overnight.
Strain and discard the water.
Put the almonds and 2 cups of water in a blender.
Blend for about a minute.
Add the third cup and the dates and keep blending for a few moments.
Pour the mixture through the muslin bag and squeeze out all the milk into a bowl, until only almond pulp remains in the bag.
Keep refrigerated. Consume within 2-3 days.