With this step you need to be patient and keep blending on low to medium for a very long time to get a velvety consistency. You will see that this frosting creation is more of an art than a matter of combining ingredients. This is one of those recipes that really makes use of the power of a high-speed blender. If you feel that the blades are just spinning but aren’t actually moving all of the frosting around, turn the blender off and make an air pocket down the side of the blender with a spatula to expose the blades. Remove the spatula, replace the lid, and start blending slowly again. You may need to do this several times and add tiny amounts of the water gradually and slowly to get the right consistency. You can achieve a very smooth result if the dates have been warmed gently in the oven for 5-10 minutes and continue to baby the blending process constantly running the spatula down the sides making sure all the ingredients are mixing and blending well. Be sure not to add too much water. You do not want to make the mixture runny, the ideal consistency is a thick paste like a nut butter.