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Photo: division, CSIRO, CC BY 3.0 (via Wikimedia Commons)

Wakame

Undaria pinnatifida

Also known as Sea Mustard, Japanese Kelp, Miyeok, Qundai Cai

At a glance
Family
Alariaceae (brown algae)
Type
Edible brown seaweed
Parts used
Fronds (blade), sometimes the midrib and sporophyll
Size
Fronds reach 1 to 2 meters long in the wild
Bloom
Does not flower; releases spores from the sporophyll in cooler months
Habitat
Cold, nutrient-rich coastal waters, attached to rocks or cultivation ropes just below the low tide line
Acquisition
Buy

Key benefits

Rich source of iodine
Traditional nourishing food
Supports postpartum recovery
Mineral-rich broth base

Traditional uses

Wakame has been gathered and eaten along the coasts of Japan and Korea for well over a thousand years, prized as a food that nourishes blood and restores strength. In Korea, it forms the base of miyeok guk, a warming soup traditionally given to new mothers to aid recovery after childbirth. Coastal communities across East Asia also valued it as a reliable, mineral-dense food during lean winter months, when fresh vegetables were scarce.

How to grow & use it

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The full apothecary for Wakame

Traditional remedies and step-by-step preparations, a complete growing guide, and how to harvest, dry, and store it, all unlocked with HerbLens Unlimited.

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  • Growing guide
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Pairs well with
  • Ginger
  • Garlic
  • Shiitake mushroom
Substitutes
  • Kombu
  • Dulse
Choose it when

For the taste of the tide and a bowl that has warmed mothers and families for generations.

Did you know?

In Korea, miyeok guk is eaten not only by new mothers after childbirth but by nearly everyone on their birthday each year, a quiet yearly tribute to the mother who once ate it to recover after giving birth to them.

Safety

Wakame is a safe traditional food in normal culinary amounts, but it is very high in iodine, so people with thyroid conditions or on thyroid medication should be cautious, and pregnant or breastfeeding individuals should keep servings modest.