Thoroughly wash 100 g young ginger root (shin shoga) and roughly cut into 5cm pieces (approx 2 inches). Cut each piece into thin slices about 2mm thick.
Bring a pot of water to a rolling boil and blanch the ginger for 1 minute.
Drain the water by pouring the contents of the pan into a colander, then rinse with cold water to cool. Shake thoroughly, then transfer to a bowl and sprinkle with ½ tsp salt. Rub the salt over the ginger until evenly covered.
Place a clean plate on top of the ginger and weigh it down with something heavy. Rest for 1 hour.
Squeeze out the accumulated liquid and discard.
If you have time, arrange the slices on a bamboo tray or mesh sieve and leave to dry in a well ventilated area for several hours. Alternatively, pat the surface dry with kitchen paper.
Once dried, cut each slice into thin matchsticks and place them in a sterilized, sealable jar.
Mix 125 ml red ume plum vinegar (umesu) and ½ tbsp sugar in a jug until the sugar has dissolved. Pour the mixture into the jar, ensuring the ginger is fully submerged.
Store in the refrigerator and rest for at least 1 day (for best results, wait 4-5 days before consuming). Enjoy!
Notes
Store in the refrigerator in an airtight container for up to 6 months.
Once opened, consume within several weeks.
Note: The nutritional information includes the pickling liquid.