Combine all of the ingredients in a blender and blend until the hemp hearts are completely broken down, about 60 seconds.
Pour the milk through a fine mesh strainer or nut milk bag, to remove any pulp. (There won't be a lot strained out, so this is optional if you don't mind a bit of sediment in the bottom of your cup.) Serve right away, or store in an airtight container in the fridge for up to 5 days.
Nutrition information is four 1/4 of this recipe. This is automatically calculated, and is just an estimate, not a guarantee.