Heat up your waffle maker.
In a large bowl, add flour, sugar, baking powder, and salt. Combine well and create a well in the center.
In a medium bowl, combine eggs, kombucha, coconut oil (or butter), and vanilla. Mix well.
Poor the wet ingredients into the center of the dry ingredients. Mix with a wooden spoon just until all dry ingredients are well incorporated. Allow the mix to rest for 1-2 minutes.
Scoop into waffle maker ½ cup at a time and cook according to your waffle maker's instructions.