Sushi ginger as commonly known in English, but it’s actually a pickle dish in Japan which does not limit to accompany sushi only 😉
The ginger used is new ginger, which is white in and out, and pink on the top. If it gets older, the pink part will turn darker and black, and it starts to grow white strings on the body. When cut it, new ones are juicy inside, easy to cut, less string, while old ones are dry, hard to cut and strings are thick and hard to cut, taste lot spicier too.
To make it, for around 400-450g ginger, vinegar 160ml, sugar 9 tsp, salt 1 tsp, sake few drops/1 or 2 tsp. This makes quite a lot of soup, but to make sure the flavor, and ginger was not super fresh, I made it sweetie so it doesn’t turn out too spicy. The first time I make it myself without help was totally failed since I underestimate the sugar we need for it even though I knew it need “lots” of sugar.
Scratch out ginger skin, and cut it to portions so it’s easier to slice. Cut by knife is better than slicer, though it takes forever to cut, and they might be in different thickness with not excellent skill.
In a small pot, add all ingredient for soup, melt the sugar and make it to boil, try the flavor by finger, should make sourness and sweetness balanced. When just boil, try one piece of ginger for the taste, it’s okay to make it a bit sweet since sweetness would turn milder after cooled down. Drop a handful ginger slices, when it turn boiling, reduce the flame, and mix ginger well with the soup. Always add ginger when it’s just boiling, and reduce heat after it boils again. Should be ready around 10-20 seconds, take the ginger out with a sief and make another round until all finish. Leave it in a bowl to cool down before put it to a container and store in fridge. First round ginger should be light pink color, later would not turn pink as first round, but as long as the flavor is okay, they will eventually mix together and become pink like a family. It should last for few weeks or more if keep it clean (always take it out with clean chopsticks) and cool.