NEW YORK — For the past several years, members of the food community and environmentalists alike have looked to kelp, a type of seaweed, as the shiny future of food.

For humans, kelp has high concentrations of potassium, magnesium and iodine and a bunch of vitamins. For Mother Earth, kelp doesn’t require irrigation, pesticides or fertiliser, as many land-based crops do.

“Kelp is a core part of the new climate cuisine,” said Mr Bren Smith, 48, founder of the nonprofit GreenWave, which promotes regenerative ocean farming, a type of farming that deliberately improves the health of the place being farmed. (And for chefs: It is an umami-heavy ingredient that is flexible in its culinary application.)

Dr Michael Doall, 53, a marine scientist and the associate director for bivalve restoration at Stony Brook University’s School of Marine and Atmospheric Sciences, said kelp soaks up excess nitrogen, mitigating “harmful algae blooms”.

The seaweed, Dr Doall said, shields farms and shorelines by absorbing “wave energy”.

Sounds like a win-win, right? So why has kelp taken time to catch on within the American marketplace?

Some are betting it will. Five years ago, Ms Lia Heifetz, 30, founded Barnacle Foods with Mr Matt Kern, 34, in Juneau, Alaska. Capitalising on a regional type of seaweed that has been eaten in Alaska for generations — bull kelp — the pair began to make salsa and pickles.

There’s also the newly founded Eat More Kelp, on eastern Long Island, New York, which will be offering a community-supported kelp crop not unlike a CSA box. The company has introduced a line of clothing in partnership with Patagonia to drum up interest in the brand and the crop.

Ms Bri Warner, 36, is the CEO of Atlantic Sea Farms, a company in Saco, Maine, that grows kelp in conjunction with Maine farmers and processes it into edible products.

In the past year and a half, Ms Warner said, Atlantic Sea Farms has been able to scale up production of kelp to one million pounds from 30,000 pounds.

“And so when I hear things like, ‘Oh, the seaweed industry is not growing,’ I’m like, ‘Oh, really?'” she said.

Some of the company’s high-profile partnerships include Daily Harvest and Sweetgreen.

Mr Markos Scheer, 52, CEO of Seagrove Kelp, plans to expand his Alaska kelp farm “as rapidly as the market will allow”. He has 700 acres in the application phase awaiting permitting, in addition to the 127 acres that are already fully operational.

“Everybody put the horse before the cart,” said Mr Casey Emmett, 36, CEO of the Crop Project, a company that buys seaweed from farmers and then dries and mills it so that it can be used to make food, fertiliser and biomaterials, like plastic.

This past year, he said, the Crop Project, in conjunction with GreenWave, was able to harvest 5,000 pounds of kelp during the peak months of the pandemic, which they dried in a tobacco barn.

Before the pandemic, Mr Smith, of GreenWave, said the intention had been to process the kelp in commercial kitchens.

“We didn’t feel comfortable processing in close quarters,” he said. Instead, Mr Smith found that Connecticut had almost 100 empty tobacco barns: “I never let a crisis go to waste.”

Now is the moment, Mr Emmett said, when US consumers are likely to see more kelp products, because of a more developed infrastructure: More kelp farmers on the water, more processing plants, and innovative approaches to drying and preparation (like the use of defunct tobacco barns). THE NEW YORK TIMES