Andrew Gruel plates duel creations from latest food concepts: Butterleaf and Two Birds that showcases vegetables and chicken, respectively, at Irvine's Food Trade Hall.(Photo by Cindy Yamanaka, Orange County Register/SCNG)

Andrew Gruel cradles his two babies a plate from veggie-based Butterleaf and chicken-inspired Two Birds at the indoor-outdoor Trade Food Hall, Irvine. (Photo by Cindy Yamanaka, Orange County Register/SCNG)

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Andrew Gruel of Slapfish fame loves vegetables. His latest food concepts: Butterleaf and Two Birds showcase vegetables and chicken, respectively at Irvine's Food Trade Hall. Crispy Jidori Chicken Sandwich with pickle slaw, Tiger sauce and fresh herbs, left, and a Vegetable Poutine of fries smothered in fresh-made vegetable chowder is served in an open-air courtyard. (Photo by Cindy Yamanaka, Orange County Register/SCNG)

Butterleaf and Two Birds present a Signature Butterleaf Sandwich of mushroom filet, heirloom carrots, beefsteak tomatoes, avocado and Kimchi sauce, left, with Avocado Bombs of potato chip-crusted warm avocado bites at Irvine's Food Trade Hall. (Photo by Cindy Yamanaka, Orange County Register/SCNG)

Trade Food Hall exudes a coastal chic casual vibe an open air setting. The Irvine hall is host to independent eateries. (Photo by Cindy Yamanaka, Orange County Register/SCNG)



TRADE food hall is across the street from the Pathways building in Irvine near John Wayne Airport. (Nancy Luna, Orange County Register/SCNG)

Jaime Benson, Center Hub owner, has made his way up the ranks of the restaurant business. He slows down for a moment at Trade's bar in Irvine. (Photo by Cindy Yamanaka, Orange County Register/SCNG)

Open-air Trade, near John Wayne Airport, at 2222 Michelson Drive is part of Orange County's growing food hall trend. (Photo by Cindy Yamanaka, Orange County Register/SCNG)

Serene and open. Trade showcases Center Hub, Dos Chinos, Two Birds, Butterleaf, Megadon,The Sandwich Society, Portside and more which face the Irvine courtyard. (Photo by Cindy Yamanaka, Orange County Register/SCNG)

Butterleaf at Irvine's Food Trade Hall offers vegetarian food for non-vegetarians by Andrew Gruel, chef/owner. Next to the vegetable-based eatery is another Gruel venture, Two Birds, serving grilled and fried chicken. (Photo by Cindy Yamanaka, Orange County Register/SCNG)



Andrew Gruel plates a vegetarian dish at his new Food Trade Hall eatery, Butterleaf. The Irvine eatery is solely plant-based and based on Gruel's love of vegetables. (Photo by Cindy Yamanaka, Orange County Register/SCNG)

Andrew Gruel's latest venture Butterleaf offers "vegetarian food for meat lovers." Next door is his other concept, Two Birds which serves chicken at Trade Food Hall in Irvine. (Photo by Cindy Yamanaka, Orange County Register/SCNG)

Andrew Gruel eats an organic carrot from his latest concept Butterleaf which has a vegetable-based menu at Trade Food Hall in Irvine. (Photo by Cindy Yamanaka, Orange County Register/SCNG)

The first wave of Orange County food halls gave us poke with an ocean view in Huntington Beach, gourmet New York-style pizza in downtown Santa Ana and Indian street food in a century-old packing house in Anaheim.

Now the second swell of culinary walkabouts is emerging. And, let me tell you: Get ready for a tsunami.

McFadden Public Market in Santa Ana opened last month. And in Irvine, TRADE, at 2222 Michelson Drive, celebrates its grand opening on Saturday, May 13.

“This is going to be a dining mecca of international concepts,” said Kenny Liu, leasing manager for The Source, a mega-entertainment and food complex in Buena Park.

Within The Source, a food hall dubbed Square Mixx is coming next year. It’s one of two international marketplaces in the works in Orange County. The other is a Vietnamese-themed food hall in Little Saigon.

Surprisingly, Irvine’s first food hall TRADE is being developed on a parcel not owned by the Irvine Co. Though we suspect the city’s largest landowner has culinary aspirations for the ex-Macy’s space at Irvine Spectrum Center.

TRADE, formerly Michelson Marketplace, is a joint effort between Lincoln Property Co. and Alcion Ventures. The two companies have spent roughly $5 million converting the aging food court within the 32,000-square-foot strip center into an open-air hall.

Like McFadden, TRADE has tapped experienced operators from buzzy concepts such as Dos Chinos, Slapfish, Afters Ice Cream and GD Bro Burger to bring fresh food stands to the center near John Wayne Airport.

“We had to get these guys who had the following to bring people here,” said Parke Miller, executive vice president of Irvine-based Lincoln Property Co.

Restaurants by Andrew Gruel opened last month. The creator of fast-casual seafood sensation Slapfish has developed yin-and-yang concepts Two Birds and Butterleaf.

At Butterleaf, Gruel is following the veggie trend with produce as “drool-worthy” center-of-the-plate creations. The menu features roasted or sauteed vegetables bathed in various housemade sauces including Green Goddess and a spicy tiger sauce.

Meals come as wraps or bowls and with sides. One standout appetizer: Avocado Bombs, diced avocados rolled in crushed corn chips, deep fried and topped with kimchi tiger sauce.

Though veggies are king here, Gruel says don’t call Butterleaf a “plant-based restaurant” because his intention isn’t to cater strictly to vegetarians; he predicts carnivores will love it too.

“It’s vegetables for meat eaters,” he said.

At Two Birds, Gruel is following an indulgent trend: fried chicken. The limited menu features grilled or fried Jidori chicken served as a sandwich or salad for $9.

“I don’t think we’re reinventing the wheel. We are definitely trying to take advantage of chicken being hot,” Gruel said.

Most of the TRADE food stands have been open for a few weeks, including a second brick-and-mortar outlet for Hop Phan’s Dos Chinos.

Like Slapfish, the Vietnamese and Mexican fusion eatery started out as a food truck. Phan parked the concept at 4th Street Market two years ago. Now, he’s taking it to Irvine, along with new concept Megadon, a Latin, Asian, Mexican and Hawaiian fusion eatery.

Pig Pen Delicacy, which debuted last year at 4th Street Market, is a pork-centric eatery from the creators of Afters Ice Cream and GD Bro Burger. It recently opened at SteelCraft, a Long Beach food marketplace built from shipping containers. Popular offerings include Pork Belly Fries, Maple Bacon Jam Burger and the MacAttack Burger. The latter is served on fried mac ‘n cheese buns.

Other TRADE food stalls: Portside, a seafood shack serving fish and chips, calamari and fish tacos; Gyro King, Greek sandwiches, gyros and plates; Sweet Combforts, a whimsical twist on a classic Belgian-style liege waffle. And, yes, that’s how you spell it because the dimples on the waffle form a honeycomb pattern. The waffles, infused with pearl sugars, are served on a stick and dipped in a variety of cookie butter flavors.

Following the one-bar-serves-all philosophy of Recess at 4th Street Market, Center Hub will provide all the libations for TRADE’s eight restaurants. Expect simple, classic cocktails, boutique wines and 10 taps of craft beer.