Bamboo shoots: Rinse the bamboo shoot removing any debris. Place shoot in a pot and boil for 5 minutes. Peel away the outer layer to reveal the tender inner shoot. Thinly slice the shoot, diagonally
Sansho Leaf Sauce: Place the miso and sugar in a microwaveable container, microwave on high for 15 to 20 seconds or until the sugar has dissolved or you may also place in a small pot and dissolve on stove top. Rinse and pat dry the sansho leaves. Place leaves in a mortar and pestle and grind until pulpy. Add the vinegar and continue to grind the leaves until smooth. Add the miso paste and the 1/2 cup of sake. Place the bamboo shoots around a plate and pour the sansho leaf sauce over the shoots. Add extra sansho leaves, as garnish.