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We also found an example of people consuming sea kale.

Historical accounts report laws related to collection of seaweed in Iceland, Brittany and Ireland dating to the 10th Century, while sea kale is mentioned by Pliny as a sailor's anti-scurvy remedy.

He saw his “pharmacopoeia” of medicinal plants, lavender, daffodils, sea kale and wild bees as therapy, and, in an interview for British television a year before his death, said: “I should’ve been a gardener.”

And despite what is known as the "hungry gap" around March, Scotland still produces a variety of fish and seafood, and is the only grower of short sea kale during the season.

These include sea kale, a type of cabbage; a root vegetable named salsify; comfrey; and sesame.