In a clean glass fermenting jar, put your kefir grains.
Add the dates to the jar.
Add the coconut milk to the jar.
Close jar and let ferment for 12-24 hours.
If your house is warm, check at the 12 hour mark. Your coconut milk kefir should have a tart taste, and the milk separating is normal. You can ferment up to 48 hours if necessary.
Once your coconut milk kefir tastes perfect, strain and move to a clean glass jar and store in the fridge. Your coconut milk kefir should keep for approximately 2 weeks.
Notes
In between batches, keep your milk kefir grains in coconut milk with dates or store in dairy milk. The grains do best in dairy milk but it is not 100% necessary. Discoloration of the grains when stored in coconut milk is also normal.