In a mixing bowl, whisk together eggs, salt, vanillin, and sugar until smooth and frothy.
Gradually add in the milk, one portion at a time, while whisking continuously to avoid lumps.
Sift in the flour, corn starch, and cocoa powder. Mix until smooth and well combined.
Stir in the melted butter and mix thoroughly. Let the batter rest for 10–15 minutes.
Heat a non-stick skillet or crepe pan over medium heat. Lightly grease with butter if necessary.
Pour a small amount of batter into the pan, swirling it to cover the surface in a thin layer.
Cook for 1–2 minutes until the edges lift and the underside is golden brown. Flip and cook for another 30 seconds.
Brush the crepes with honey while they are still warm.
Serve as is, or with your favorite toppings and fillings.