Combine the hemp seeds, filtered water, and pitted dates in the pitcher of a high-speed blender.
Use a paring knife to cut off the ends of the vanilla bean. Then, hold the bean firmly against a cutting board and slice the bean lengthwise. Open the bean and scrape out the seeds, adding them to the pitcher. Discard the empty vanilla bean pod.
Process the contents in the pitcher on high for about 30 seconds. You do not need to strain the milk, and it will stay fresh for up to 5 day in the refrigerator.
Give the hemp milk a shake before using if you find that it separates.
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