Add coconut oil, starter, flour and cocoa powder into mixer until fully combined. If you want more of the tang flavor add 2 cups of flour and if you want less tang add 4 cups flour.
Cover with plastic wrap or a tea towel.
Leave out in a warm place overnight to allow fermentation.
The next day, blend sugar, eggs and vanilla extract to the mixture until fully combined.
Blend salt and baking powder until everything is combined. It will be liquid and fudgy.
If you would like to add peppermint flavor, now is the time to do so. Mix the dough until the flavor is fully incorporated.
Put the dough in the fridge for several hours or overnight.
Take the dough out of the fridge, it should be quite hard and feel like fudge.
Preheat your oven (unless you are freezing them)
Form into 1 inch balls using a cookie scoop and rolling with your hands.
If your cookies are getting warm, place the balls into the fridge until they are hard. You may even need to put the dough back in because these cookies need to be cold.
Use your rubber spatula to get any remaining dough from the bowl.
Roll each cookie into powdered sugar before putting into a preheated oven.
Bake for 9-10 minutes or until the outside has a hard shell and crinkle look. The inside will be soft.
Allow cookies to cool on baking sheet for ten minutes before transferring to a cooling rack.
If you would like to top with crushed candy canes, now is the time. Simply put a few candy canes in a ziplock bag and using a kitchen mallet crush the candy canes into chunks. Once cookies are cool, sprinkle the candy cane pieces onto the cookies.
Enjoy right away or store in fridge for 1 week or freeze for 3 months.