Both species are large brown to golden brown seaweeds up to 3m long, with flat, finger-like fronds extending from a narrow stem (technically known as a meristem). The best way to distinguish between the two, is by the flattened stem of oarweed that flops limp when exposed, compared to the round, solid stems of forest kelp…
Sugar kelp is closely related to Saccharina japonica, the (farmed) seaweed basis of nearly all Japanese dashi, and can be used in similar ways – adding umami to soups, stews and stocks.
A very distinctive and tasty seaweed – up to 2m long yellowy brown spaghetti-like fronds, dividing near the base, growing from small, button-like holdfasts.
This is a wonderful seaweed that is quite easy to find in the right habitat…
Sea lettuce is pleasant if unspectacular fresh, becoming truly delicious when dried – with a rich deep flavour…