The Greenmarket farmers are the anchor tenants, he said, “and the drivers of our mission.” So far, close to 20 farmers and other Greenmarket vendors have signed up, said Michael Hurwitz, the Greenmarket director. “We’ve never integrated with prepared-food purveyors on this scale, and we see this as a new hybrid endeavor,” he said. For example, Tenpenny, an offshoot of the intimate Manhattan restaurant in the Gotham Hotel, will offer a medley of summer vegetable dishes, like a flea-market version of its decadently composed vegetable concoction with lemon crème fraîche, ranch powder and caramelized sunchoke crumble.

The Smorgasburg lot, at 27 North Sixth Street, between Kent Avenue and the East River (near East River State Park), will be open from 9 a.m. to 5 p.m. It is the same spot that, since April, has hosted a 150-vendor offshoot of Brooklyn Flea on Sundays. That market will continue, as well as the original Brooklyn Flea on Saturdays at a parking lot in Fort Greene.

Vendors will pay Brooklyn Flea $100 to $200 a day for Smorgasburg booths. As elsewhere, farmers will pay the Greenmarket $60 to $90 a day, and the Greenmarket will pay “a very modest rent,” Mr. Demby said, “since we really want them to be there.”

The Vendors: A List of the Smorgasburg Participants

Here are descriptions from Eric Demby, the organizer of Smorgasburg, of vendors that will be at this new open-air food court in Williamsburg, Brooklyn. Most are new, but some have been at Brooklyn Flea before. Smorgasburg will be open on Saturdays from 9 a.m. to 5 p.m., at 27 North Sixth Street, between Kent Avenue and the East River (near East River State Park).

Food Ready to Eat

BEP An Nguyen Xuan, who runs a Vietnamese pop-up inside Simple Cafe in South Williamsburg, will be serving banh mi (with barbecue pork), noodles and maybe a few other dishes.

BITE SIZE KITCHEN Connie Sun, a line chef at the Citigroup executive dining room who teaches dumpling-making at Brooklyn Kitchen, will serve her take on Asian street food, like dumplings, banana-ricotta spring rolls, Shanghai-style scallion-shrimp pancakes, yakitori and prawn chips.

BLUE BOTTLE COFFEE Drip coffee, with beans to take home.

BON CHOVIE Nothing but fried and fresh anchovies served with aioli and lemon.