Whisk together milk and heavy cream over low heat until simmering.
Add kief or cannabis, and simmer on low heat for 30-45 minutes. Make sure to whisk often while simmering to keep from burning.
Add maple syrup and vanilla at end of simmer.
Place contents in glass container and store in fridge.
If using cannabis (not kief), use 14 grams, finely ground, and strained through mesh strainer after simmer.