Pour boiling water over dates. Soak for at least 15 minutes; longer is fine. Blend then chill; or chill until you're ready to make your milkshake, then blend. (I blended mine, then put my blender in the fridge for a few hours, until I was ready to make the milkshakes.)
Add a few gratings of nutmeg, milk, and ice cream. Blend until smooth and pour into frosted glasses. Top with whipped cream and a cherry if desired. Yields two large, delicious milkshakes.