Add 1 egg, 15g coconut flour, 10g erythritol, baking powder, 1 teaspoon konjac flour (essential), 30g melted butter, 40g water, and a pinch of salt to a blender and blend until smooth.
Preheat a waffle pan or waffle maker, brush with butter, pour in the batter, and cook for 6 minutes.
Remove and let cool completely to finish!