Timothy Hollingsworth (born, January 30, 1980) is an American chef and restaurateur.
 In 2012, he moved to Los Angeles, California after leaving his post as the former at Thomas Keller’s restaurant The French Laundry in the Napa Valley.
 He is currently the chef and owner of both Otium in Los Angeles, California and Barrel & Ashes in Studio City, California.
 He has won multiple awards throughout his career from the 2010 James Beard Foundation's Rising Chef of the Year Award, 2010 San Francisco Chronicle Rising Star Chef, and the most prominent the 2009 Bocuse d'Or.
 After winning the Bocuse d'Or USA semi-finals, held at Epcot in September 2008, Hollingsworth represented the United States at the Bocuse d'Or world final, in 2009.
 He placed sixth out of 24 prominent chef teams from around the world, which was the highest ranking until 2015.
Ludovic "Ludo" Lefebvre (] ), born 18 April 1971, is a French chef, restaurateur, pop-up impresario, author, and television personality.
 He trained with the great masters in France for 12 years before moving to Los Angeles.
 He was quickly awarded the prestigious Mobil Travel Guide Five Star Award at two different restaurants, L'Orangerie in 1999 and 2000 and Bastide in 2006.
 He then went on to create his uber-popular LudoBites concept, a multi-city restaurant tour, followed by opening two restaurants in Los Angeles, "Trois Mec" and "Petit Trois".
 Trois Mec was named Best New Restaurant Los Angeles in 2013 by LA Weekly,Best Restaurant 2014 - LA Weekly Ludo was named Best Chef 2015 by LA Weekly and in 2016 took back the title of Best Restaurant in Los Angeles 2016
James Tahhan, (born October 26, 1988), better known as Chef James, is a Venezuelan chef, television personality, restaurateur, and author.
 He is best recognized for being the official chef of Telemundo, and being a co-presentor of its morning show Un Nuevo Dia.
 In 2014, together with his friend, television personality Raúl González, Chef James opened his first restaurant, Sabores - by Chef James .
 It has subsequently been named one of the best restaurants in Miami.
 In 2016, Chef James released a cookbook, "The Homemade Chef: Ordinary Ingredients for Extraordinary Food".
Kumar Mahadevan (born 23 November 1959) is an Indian chef, restaurateur and media personality, based in Australia.
 He is often referred in Sydney's dining circles as the "Guru of Indian cuisine".
 He is recognised for introducing authentic Indian cuisine to the Australian public with his restaurant, "Abhi's" in 1990.
 Following the success of "Abhi's" he opened his second restaurant "Aki's" at Sydney's prestigious dining precinct 'The Finger Wharf Woolloomooloo'.
 "Aki's" carried the accolades for Chef Kumar, being the only Indian restaurant to win the coveted 'Chef Hat' award for consecutive years since 2011 till present.
Robert Paul Irvine (born 24 September 1965) is an English celebrity chef who has appeared on and hosted a variety of Food Network programs including "", "Worst Cooks in America", "", "A Hero's Welcome, Operation Restaurant, All-Star Academy, Guy's Grocery Games, Chopped: Impossible" and "Restaurant Express".
Restaurant: Impossible is an American reality television series, featuring chef and restaurateur Robert Irvine, that aired on Food Network from 2011 to 2016.
Stephen Starr is the James Beard Award winning restaurateur behind Starr Restaurants.
 In 2017, he took home the "Outstanding Restaurateur" James Beard Award, and his restaurant Le Coucou with acclaimed chef Daniel Rose, was also named "Best New Restaurant."
.
 Stephen has also received a nod from both Bon Appétit and Zagat as "Restaurateur of the Year."
 Travel + Leisure noted that "Starr creates complete environments with an artistic, almost cerebral approach". "
USA Today" identified him as "the 'It' guy of the city’s food scene", while "Restaurant Hospitality" reported his winning the annual Richard Melman Innovator of the Year award in 2013 and cited his popular restaurants in Philadelphia as "arguably the key reason for the city’s revitalized culinary scene".
 The Harvard Observer recognized Starr "for making contributions of outstanding artistic significance to the field of restaurant hospitality over the whole of his career"
Thomas Keller (born October 14, 1955) is an American chef, restaurateur, and cookbook writer.
 He and his landmark Napa Valley restaurant, The French Laundry in Yountville, California, have won multiple awards from the James Beard Foundation, notably the Best California Chef in 1996, and the Best Chef in America in 1997.
 The restaurant is a perennial winner in the annual Restaurant Magazine list of the Top 50 Restaurants of the World.
Suzanne Goin is a chef and restaurateur from Los Angeles, California.
 As a restaurateur, she runs three fine dining restaurants in the Los Angeles area: a.o.c., Lucques, and Tavern, which she runs with partner Caroline Styne, as well as four Larders, a marketplace/restaurant, Lucques Catering and the Larder Baking Company, a wholesale bakery.
 She is also co-founder of The Hungry Cat, with her husband, David Lentz.
 As an award-winning chef, she was named as one of Food & Wine Magazine's "best new chefs of 1999" and was nominated for James Beard awards as Outstanding Chef eight times, finally winning the coveted national award in 2016.
 Her restaurants have been praised by Gourmet magazine, Bon Appétit and Los Angeles Times (which awarded Lucques three stars).
 Early in her career 2006 Goin won the James Beard award for Best Chef: California as well as for her cookbook, Sunday Suppers at Lucques.
Alessandro Stratta (born October 29, 1964 in Marquette, Wisconsin) is a celebrity chef and restaurateur of mixed Italian and French heritage.
 Stratta played the role of "Iron Chef Italian" on the television show Iron Chef USA.
 He was the recipient of the James Beard Foundation award for Best Chef Southwest in 1998 and was executive chef and owner of his famous namesake restaurant, Alex, in Las Vegas until its closure on January 15, 2011.
 He was later diagnosed with colon cancer and became a cancer survivor.
 He was the executive chef and owner of "Tapas by Alex Stratta" in the affluent Las Vegas suburb of Summerlin, until it closed in 2015.
 In 2016, Stratta became executive chef de cuisine at Prado restaurant at the Omni Hotel in Paradise Valley, Arizona.

Question: What is the nationality of the chef and restaurateur featured in Restaurant: Impossible?
Answer: English