Knotted wrack

Ascophyllum nodosum

seaweed

A brown seaweed with air bladders, dried into flakes or powder for seasoning, or added to soups, in Brittany, Ireland and Canada.

Origin

North Atlantic coasts

Season (United States)

all year round · grows in your region

Preparation

Very rich in iodine: in small amounts, not every day.

Molecules

Seaweed polysaccharides · Iodine

Did you know?

Each bladder corresponds roughly to one year of growth: this gives an estimate of its age.