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Seaweed FAQ

What about the organic certification of "This is Seaweed"?

seaweed faq


Why is seaweed a „superfood“?

From a nutritional point of view, seaweeds are low calorie foods that contain an exceptional level of minerals, proteins, dietary fibre and vitamins; making them a tasty way to nourish your mental and physical health. Integrating seaweeds into your diet has long-term benefits for your overall-health: Seaweeds can help regulating your metabolism, cleansing your blood and calming your digestive tract. 


Accounting for over one third of the sea vegetables' dry weight, seaweeds are incredibly wealthy in mineral elements.Yet, most seaweeds are much richer in calcium, iron, magnesium and iodine than terrestrial vegetables. You may know that minerals are involved in a great variety of biochemical reactions in your body. They contribute to the proper functioning of your nervous system, your muscles, your heart, your bones and your blood production.  

It’s worth having a closer look at iodine, a mineral that the sea-vegetables accumulate from the nutrient-rich seawater. Iodine is essential for our body to produce thyroid hormones which regulate the human metabolic rate and consequently, affect almost every cell. Important to note for pregnant woman is that iodine is essential for the early development of most organs, in particular that of the brain. So if you are expecting a baby, make sure you get a daily intake of about 250mcg in your body.

Because most people's diet is rather poor when it comes to iodine, most countries enrich salt with the mineral as strategy for combating iodine deficiency disorders. However, we all know that salt is not great for our health, right? In fact, consuming too much salt may elevate your blood pressure, which can lead to strokes and coronary heart diseases. 

So, what did we learn from this little lecture? Yep, seaweeds are a healthy and very creative substitute for iodized salt! And since iodine is rarely found in plant foods, seaweeds are certainly a valuable ingredient for a vegan diet. 

However, it’s important not to overstretch your iodine intake and when you have thyroid issues, you should check with your physician before adding more iodine to your diet. Please read more about iodine in How much seaweed should I eat? 


With a total content of 30 % to 60 %, seaweeds are rich in dietary fibre which is great for your digestive health because fibre supports a health-promoting gut micro-flora. To dig a bit deeper, some seaweeds are rich in soluble fibre - a component of fibre which is not digested and benefits the regulation of the intestinal transit.  

No question, a balanced diet includes getting fibre from a variety of sources such as vegetables, fruits, nuts and grains. So, what about seaweeds? A 10 g portion of sea-veggies provides about one eight of the daily fibre need. This makes them not only a super-healthy, but also a detoxing and super-creative addition to your boring cereals :P 


Sea-vegetables are rich in vitamins A and C - vital nutrients to strengthen your immune system - and vitamin E, which is known for its antioxidant activity. Plus, seaweeds are a good source of vitamin B12, which is recommended in the treatment of the effects of ageing, chronic fatigue syndrome (CFS) and anaemia. Did you know that terrestrial vegetables rarely contain any vitamin B12? Seaweeds are real super-(sea)-veggie's, huh?


The great thing about seaweeds is that they are packed with proteins containing all fundamental amino acids. Foods rich in protein are filling and help controlling appetite during the day. Plus, they have a positive impact on  bone health, muscle strength and blood pressure. Green and red seaweeds contain a protein ratio of around 10% - 30% (in relation to weight dry matter). With levels up to 45%, the red algae Dulse is a real protein rockstar.


How do seaweeds taste? Which dishes go well with seaweed?

Everybody is different - especially when it comes to food. So, be adventurous, experiment and discover you favourite sea-veggies. In this section we'll give you some guidelines and advice.


This seaweed’s initial salty and ocean-like taste develops into a delicious smoky/nutty flavour. One can taste oily fish properties from Dulse due to the rich omega 3 and 6 content. Dulse goes well with other strongly flavoured foods and was recently compared to the taste of Bacon ;). Curious? Just pan-fry some dried Dulse and serve it between two slices of bread with some vegetables, cheese and a nice sauce. 

You may want to use Dulse for seasoning, soups, stocks, quiche, seafood dishes, risotto, crisps, vegetarian burger patties, stir-fries, salads, vinaigrettes, casseroles, sushi, sandwiches and pasta dishes.

Sea Spaghetti

A nutty note combined with a shellfish after-taste and an al-dente texture makes Sea Spaghetti a fantastic enrichment to any pasta dish.

Also, this lovely strong-flavoured seaweed goes well with stews, stir-fries, casseroles, salads, sushi, seafood dishes and omelettes. 

Atlantic Wakame

Atlantic Wakame is a pleasantly mild seaweed with a rich salty sweet flavour and is typically found in miso soup and seaweed salad. Combining a chewy texture with a unique mild taste, you can use flaked Atlantic Wakame as a substitute for salt in almost every recipe. By the way, Wakame harvested from the nutrient-rich Atlantic shores is much more delicate than cultivated Japanese Wakame. Give it a try :)

Atlantic Wakame is great for seasoning, salads, rice, crisps, stir-fries, casseroles, soup, sushi and pasta.


Kelp is a mildly salty seaweed with a ocean-fresh scent. It provides dishes with the typical umami flavour which is considered as one of the five basics tastes.

You may want to use Kelp for vegetarian broth, dashi, stews, salads, soups, seasoning, bread, butter, stir-fry, casseroles.

Get some inspiration on our recipe page!


 How do I cook seaweeds? 

Whole leaf seaweeds

How you prepare your seaweed dish varies from species to species. Generally, you can cook, pan-fry, bake, steam and even eat the product in raw form. Please learn more about preparation on the product page for each seaweed.

Flaked seaweeds

Flaked seaweeds are versatile and very easy to use. You don't have to do anything more than sprinkle the flakes over your favorite dish to make it a superstar in taste and nutrition! You can add flaked seaweeds both to your cooking pot or to a dish that is ready to be served.


How much seaweed should I eat? 

Some seaweeds are high in iodine and therefore, the nutritious super-foods should be eaten moderately. As the WHO stated, the daily recommended intake for adults is 150mcg and 250mcg during pregnancy. The iodine level that adults can tolerate is 1000mcg; that should be the absolute limit.

Boiling is a great way to eliminates a seaweeds iodine content. If you boil Kelp in water for 15 minutes, it can loose up to 99% of its initial iodine levels. Good news, because Kelp is a real iodine bomb: 1g of raw Kelp contains 1,800mcg - 2,500mcg of iodine, which is way above your daily recommended intake. So don't use the delicious sea-vegetable straight from the package! Instead, boil it before you create your super-food.

The iodine level of Atlantic Wakame is about 140mcg per 1g.  So, if you eat 1g of raw Atlantic Wakame, you will reach your daily recommended iodine intake. This is why it is best to use the sea-veg moderately and boil the sea-veg before using it.

1g of raw Dulse contains 72mcg iodine. If you want to snack raw Dulse, just take one or two leaves equivalent to 2g. Again, it's better to boil this species.

1g Sea Spaghetti contains 14,6 mcg of iodine. If you are a real Sea Spaghetti fanatic, you can prepare a meal for yourself with up to 10g of the delicious algae without boiling them.

In any case, if you have thyroid issues, you should check with your physician before adding more iodine to your diet. 


How long can I keep my seaweed product before it goes off? 

You can use This is Seaweed products for two whole years! The shelf-life of our products is 24 months.


How do I store the products? 

Please store our  products in a cool dry place away from direct sunlight.


What about the organic certification of "This is Seaweed"? 

We are very proud to be awarded an organic certificate by the Irish Organic Farmers & Growers Association (IOFGA). Please read more about our organic certificate under this link.