Peel the carrots and slice lengthways into very thin strips with a peeler or vegetable slicer.

Steam the carrot strips until they are very soft. For how long depends on the size of the pieces and the way of steaming. For a rough orientation: approx. 20-45 minutes. Just check the carrots every now and then. If you don't have a steamer: you can simply put some water in a saucepan and hang the carrots in a sieve over it in the saucepan. Then set the temperature so that the water just isn’t at a rolling boil anymore and steam with the lid closed.

Finely chop the nori seaweed, preferably with a food processor. Mix all ingredients for the marinade. Put together with the still warm carrot strips in a sealable container. Let it soak in the refrigerator for 1-2 days. Shake it up every now and then.