Marinate and cook the beef a day ahead. The lettuce will be difficult at first to work with but you'll get the hang of it.
When making the fresh ginger marinade for the beef in this recipe (or anything that's going to be grilled), use just the grated ginger juice, not the ginger fiber. The fiber burns quickly, giving the beef a scorched taste, which you don't want.
Pickled mountain burdock (yamagobo) looks like skinny carrots and tastes like pickled parsnips. It's an extraordinary flavor to couple with ginger-flavored beef. The only tricky part of the recipe is not tearing the tender lettuce as you work with it. That's why it's wisest to blanch extra pieces of lettuce so that you have plenty to work with.
Special sushi tools:
Bamboo mat wrapped with plastic wrap, sashimi or sharp knife