This recipe is from the book "At Home with Japanese Cooking" by Elizabeth Andoh. I haven't tried it, but am posting it for future use and safekeeping because I always seem to have leftover egg from various other recipes.
If using add trefoil/coriander/chives, cover pot for 30-40 seconds then uncover and add pepper.
07Serve immediately.
08If you cannot find the sansho/Szechwan peppercorns, I imagine a pinch of standard black pepper (or a blend, which often contain sansho/Szechwan peppercorns) will do.