Ebi Shinjo (Shrimp Dumplings in Clear Soup)

Bahan-bahan (4 porsi)

• 11 oz shrimp
• 2.5 oz nagaimo/yamaimo (mountain yam) ((peeled weight))
• ½ tsp ginger ((grated, with juice))
• ¼ tsp Diamond Crystal kosher salt
• 2 tsp potato starch or cornstarch
• 4 cups water
• 1 piece kombu (dried kelp) ((13 x 15 cm, 5 x 6 inches per piece))
• 4 cups dashi (Japanese soup stock)
• mitsuba (Japanese parsley) ((or chives))
• yuzu zest