To a medium mixing bowl, add black sesame seeds and a pinch of salt, then cover with warm water and allow to sit for 30 minutes.
Drain and rinse sesame seeds through a fine mesh strainer, then add to a high-speed blender along with filtered water, a pinch of salt, date, vanilla (optional), and maple syrup (optional). Blend on high for about 1-2 minutes.
Strain contents of the blender through a nut milk bag into a bowl.
Enjoy immediately or transfer to a sealed glass jar. Will keep in the refrigerator 3-4 days or in the freezer for 1 month.
The leftover pulp can be frozen and added to smoothies, dehydrated and added to baked goods, or composted.
*Nutrition information is a rough estimate calculated without optional ingredients and with the sesame "pulp" removed.