Table of contents:
Summary
Nori is a type of edible seaweed made from purple laver, primarily cultivated along the coasts of Japan, Korea, and China, and is best known for its use in sushi, with Japan alone producing around 7 billion sheets annually. The production process involves harvesting, drying, shredding, and processing the seaweed into a paste, which is then spread, dried, and roasted at temperatures over 200 degrees Celsius, often seasoned with sesame before being cut to size. Besides sushi, Nori can be used in salads, smoothies, and as a wrapping for fish dishes; it is essential to slightly moisten the sheets before use to make them pliable. Nori is a rich source of protein and beneficial for vegetarians, but should be consumed in moderation due to its high iodine content, which can affect thyroid function if ingested excessively. It also contains significant amounts of vitamin A and various minerals, although its vitamin B content may not be fully utilizable by the body.
Nori are edible seaweed sheets made from Porphyra umbilicalis. They are primarily cultivated off the coasts of Japan, Korea and China and are most known for their use in preparing sushi. Japan alone produces around 7 billion sheets per year, as nori is an important food there.
## Production
After the Porphyra umbilicalis has been harvested, it is immediately dried, turned and processed into a paste by re-adding water. Following this process, this paste is spread out by a machine, dried again and then roasted at a temperature of over 200 degrees Celsius. Then they are seasoned with sesame seeds and cut to the usual size.
## Uses of Nori Sheets
Nori is not only used for the popular maki sushi, but also in salads, mixed drinks, such as smoothies and as a coating for fish dishes. To be able to use the leaves, they are slightly moistened beforehand to make them pliable for the preparation of sushi.
To make sushi rolls, you need rice, raw fish and various vegetables. In addition, a flexible bamboo mat is used for rolling. First, the mat is placed on a work surface, a sheet of nori is placed on it and then a layer of rice about 1 cm thick is applied on top of it. Some of the raw fish and vegetables are then placed in it and then rolled up. This creates a roll that still needs to be cut. It is advisable to wrap the mat with some cling film, as the rice is very sticky and will get into the gaps.
## How healthy is Nori?
Nori is considered an excellent source of protein and is therefore particularly interesting for vegetarians. However, it is important not to eat too much of this seaweed, as nori is very high in iodine. On the one hand, it is very well suited to bring your own iodine intake to a healthy level, which is an important issue for Central Europeans in particular, but on the other hand, it can lead to hyperthyroidism if consumed excessively.
The plant was also long considered to have a high content of vitamin B, but this could not always be proven in later studies. The vitamin is actually present in the plant, but the body cannot properly process it in this form. The amount of vitamin A in nori is also very high, higher than in most other vegetables.
In addition to the ingredients already mentioned, there are a number of other important minerals and trace elements for the body.
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