Grind kombu in a mill blender to make kombu powder. Store-bought kombu powder can also be used. Gather the ingredients together with the Parmigiano-Reggiano, pancetta, whole egg, and bonito flakes.
Pancetta 1 sliceWhole egg 1 per servingParmigiano-Reggiano to tasteKombu powder 2 pinchesBonito flakes 2 pinches