Bistro assistant Helena Kearsey reacts with resident Vivienne Ballentine as she eats an ice cream at Cumnor Hill House Care Home, following the coronavirus disease (COVID-19) outbreak in Oxford, Britain, May 1, 2020. REUTERS/Eddie Keogh TPX IMAGES OF THE DAY

Bistro assistant Helena Kearsey with Resident Vivienne Ballentine as she eats an ice cream at Cumnor Hill House Care Home, following the outbreak of the coronavirus disease (COVID-19), Oxford, Britain, May 1, 2020. REUTERS/Eddie Keogh

Resident Janet Wayer receives a cocktail from Bistro assistant Helena Kearsey at Cumnor Hill House Care Home, following the outbreak of the coronavirus disease (COVID-19), Oxford, Britain, May 1, 2020. REUTERS/Eddie Keogh

Cups of cappuccino are seen at a Juan Valdez store in Bogota, Colombia June 5, 2019. Picture taken June 5, 2019. REUTERS/Luisa Gonzalez

A barista prepares coffee at a Juan Valdez store in Bogota, Colombia June 5, 2019. Picture taken June 5, 2019. REUTERS/Luisa Gonzalez

Tourists and residents sit in the sun at a cafe terrace in Paris, France, February 13, 2019. REUTERS/Benoit Tessier

Bistro owners Pierre-Christophe Hantz, bistro Le Vaudesir and Michelle Maurel, bistro Le Bougainville, pose with their medal of the city after an award ceremony at the town hall in Paris, France, January 30, 2019. The bistros of Paris are world famous for their popular character. Part of the history of the French capital and the Parisian life, an association pushes for the bistros to be recognised with UNESCO World Cultural Heritage status. REUTERS/Philippe Wojazer

Bistro owners Pierre-Christophe Hantz, bistro Le Vaudesir and Michelle Maurel, bistro Le Bougainville, pose with their medal of the city after an award ceremony at the town hall in Paris, France, January 30, 2019. The bistros of Paris are world famous for their popular character. Part of the history of the French capital and the Parisian life, an association pushes for the bistros to be recognised with UNESCO World Cultural Heritage status. REUTERS/Philippe Wojazer

Bistro owner Pierre-Christophe Hantz works in his bistro Le Vaudesir in Paris, France, January 29, 2019. The bistros of Paris are world famous for their popular character. Part of the history of the French capital and the Parisian life, an association pushes for the bistros to be recognised with UNESCO World Cultural Heritage status. Picture taken January 29, 2019. REUTERS/Philippe Wojazer

Bistro waiter Florence works during lunch time at the bistro Le Bougainville in Paris, France, January 29, 2019. The bistros of Paris are world famous for their popular character. Part of the history of the French capital and the Parisian life, an association pushes for the bistros to be recognised with UNESCO World Cultural Heritage status. Picture taken January 29, 2019. REUTERS/Philippe Wojazer

Bistro owner Michelle Maurel works with her husband Christian, their daughter Carole and waiter Jonathan during lunch time at their bistro Le Bougainville in Paris, France, France, January 29, 2019. The bistros of Paris are world famous for their popular character. Part of the history of the French capital and the Parisian life, an association pushes for the bistros to be recognised with UNESCO World Cultural Heritage status. Picture taken January 29, 2019. REUTERS/Philippe Wojazer

Bistro owner Michelle Maurel works at her bistro Le Bougainville in Paris, France, January 29, 2019. The bistros of Paris are world famous for their popular character. Part of the history of the French capital and the Parisian life, an association pushes for the bistros to be recognised with UNESCO World Cultural Heritage status. Picture taken January 29, 2019. REUTERS/Philippe Wojazer

Bistro owner Michelle Maurel poses at her bistro Le Bougainville in Paris, France, France, January 29, 2019. The bistros of Paris are world famous for their popular character. Part of the history of the French capital and the Parisian life, an association pushes for the bistros to be recognised with UNESCO World Cultural Heritage status. Picture taken January 29, 2019. REUTERS/Philippe Wojazer

Bistro owners Michelle Maurel and her husband Christian work during lunch time at their bistro Le Bougainville in Paris, France, January 29, 2019. The bistros of Paris are world famous for their popular character. Part of the history of the French capital and the Parisian life, an association pushes for the bistros to be recognised with UNESCO World Cultural Heritage status. Picture taken January 29, 2019. REUTERS/Philippe Wojazer

Bistro waiter Housseine works during lunch time at the bistro Le Bougainville in Paris, France, January 29, 2019. The bistros of Paris are world famous for their popular character. Part of the history of the French capital and the Parisian life, an association pushes for the bistros to be recognised with UNESCO World Cultural Heritage status. Picture taken January 29, 2019. REUTERS/Philippe Wojazer

View inside the bistro Le Bougainville during lunch time in Paris, France, January 29, 2019. The bistros of Paris are world famous for their popular character. Part of the history of the French capital and the Parisian life, an association pushes for the bistros to be recognised with UNESCO World Cultural Heritage status. Picture taken January 29, 2019. REUTERS/Philippe Wojazer

Bistro owner Pierre-Christophe Hantz works in his bistro Le Vaudesir in Paris, France, January 29, 2019. The bistros of Paris are world famous for their popular character. Part of the history of the French capital and the Parisian life, an association pushes for the bistros to be recognised with UNESCO World Cultural Heritage status. Picture taken January 29, 2019. REUTERS/Philippe Wojazer

Bistro owner Pierre-Christophe Hantz works in his bistro Le Vaudesir in Paris, France, January 29, 2019. The bistros of Paris are world famous for their popular character. Part of the history of the French capital and the Parisian life, an association pushes for the bistros to be recognised with UNESCO World Cultural Heritage status. Picture taken January 29, 2019. REUTERS/Philippe Wojazer

Bistro owner Pierre-Christophe Hantz poses in front of his bistro Le Vaudesir in Paris, France, January 29, 2019. The bistros of Paris are world famous for their popular character. Part of the history of the French capital and the Parisian life, an association pushes for the bistros to be recognised with UNESCO World Cultural Heritage status. Picture taken January 29, 2019. REUTERS/Philippe Wojazer

A breakfast of sausage, eggs and toast is pictured in an office canteen in London, Britain July 20, 2018. REUTERS/Russell Boyce

The majority of costumers of a bistro bet on France and not on Belgium in downtown Brussels, Belgium, July 10, 2018, before tonight's soccer world cup semifinals between the two neighbouring countries. REUTERS/Wolfgang Rattay

A bartender presents a pair of Donald Trump and Kim Jong Un cocktails called The Bromance at Hopheads Craft Beer Bar and Bistro in Singapore June 8, 2018. REUTERS/Feline Lim

A bartender presents a pair of Donald Trump and Kim Jong Un cocktails called The Bromance at Hopheads Craft Beer Bar and Bistro in Singapore June 8, 2018. REUTERS/Feline Lim

A man uses his mobile phone at the Brew Bistro & Lounge in Nairobi, Kenya, April 13, 2017. REUTERS/Siegfried Modola SEARCH "MODOLA NAIROBI" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A band performs at the Brew Bistro & Lounge in Nairobi, Kenya, April 13, 2017. REUTERS/Siegfried Modola SEARCH "MODOLA NAIROBI" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A barista holds a cappuccino coffee at the La Tercera cafe in Beijing, China May 6, 2017. REUTERS/Thomas Peter

An iced "Unicorn Latte" is pictured at the cafe The End in New York, U.S. May 5, 2017. REUTERS/Lucas Jackson

A barista creates 3D latte art of cats on a cup of iced coffee at a cafe in Singapore May 5, 2017. REUTERS/Edgar Su

A Special Operations Battalion (BOPE) policeman sits in a bistro during an operation in the Alemao slums complex, after violent clashes between policemen and drug dealers in Rio de Janeiro, Brazil May 4, 2017. REUTERS/Ricardo Moraes

Coffee beans are seen in a roaster in the Cafe Competence Center in Vienna, Austria May 4, 2017. REUTERS/Leonhard Foeger

A photo illustration shows a coffee sitting next to a promotional sign after it was made for a customer at a Sydney cafe in Australia, May 4, 2017. REUTERS/David Gray/Illustration

A photo illustration shows a coffee reflected in a coffee machine after it was made for a customer at a Sydney cafe in Australia, May 4, 2017. REUTERS/David Gray/Illustration

A photo illustration shows a coffee sitting atop a promotional sign after it was made for a customer at a Sydney cafe in Australia, May 4, 2017. REUTERS/David Gray/Illustration

A photo illustration shows the crema of an espresso coffee rising to the top of the cup after being poured by a machine in a home in Sydney, Australia May 3, 2017. REUTERS/Jason Reed/Illustration

A photo illustration shows an automatic coffee machine pouring an espresso into a glass in a home in Sydney, Australia May 3, 2017. REUTERS/Jason Reed/Illustration

A photo illustration shows an automatic coffee machine pouring an espresso into a glass in a home in Sydney, Australia May 3, 2017. REUTERS/Jason Reed/Illustration

Freshly ground Arabica coffee drips from a domestic coffee machine to make an espresso, Northwich, Britain May 1, 2017. Picture taken May 1, 2017. REUTERS/Jason Cairnduff

An illustration picture shows an espresso made from a Nespresso capsule with a kitchen-aid coffee maker, May 1, 2017. REUTERS/Kai Pfaffenbach/Illustration

A woman carries her child as she waits for a cup of soup being served by chefs of La Casa Bistro restaurant, members of the "Full Stomach, Happy Heart" (Barriga llena, corazon contento) charity, at the J.M. de los Rios Children Hospital in Caracas, Venezuela February 13, 2017. Picture taken February 13, 2017. REUTERS/Marco Bello

Chefs of La Casa Bistro restaurant, and members of the "Full Stomach, Happy Heart" (Barriga llena, corazon contento) charity, unload a cooking pot full of soup to be donated to the Mother Teresa of Calcutta nursing home, in Caracas, Venezuela February 20, 2017. Picture taken February 20, 2017. REUTERS/Marco Bello

A woman greets chefs of La Casa Bistro restaurant, members of the "Full Stomach, Happy Heart" (Barriga llena, corazon contento) charity, as they arrive carrying a cooking pot full of soup donated to the Mother Teresa of Calcutta nursing home, in Caracas, Venezuela February 20, 2017. Picture taken February 20, 2017. REUTERS/Marco Bello

Ronald Carpio, a chef at La Casa Bistro restaurant, member of the "Full Stomach, Happy Heart" (Barriga llena, corazon contento) charity, prepares soup to be donated to the J.M. de los Rios Children Hospital, in Caracas, Venezuela February 13, 2017. Picture taken February 13, 2017. REUTERS/Marco Bello

Waitresses of the J.M. de los Rios Children Hospital wait for cups of soup donated by La Casa Bistro restaurant, member of the "Full Stomach, Happy Heart" (Barriga llena, corazon contento) charity, to distribute them at hospitalization floors, in Caracas, Venezuela February 20, 2017. Picture taken February 20, 2017. REUTERS/Marco Bello

A traditional dish of goose risotto with goose leg and liver served at restaurant Macesz Bistro in Budapest's historic Jewish district, Hungary, January 24, 2017. Picture taken January 24, 2017. REUTERS/Laszlo Balogh

The chef of restaurant Macesz Bistro in Budapest's historic Jewish district holds up a plate of goose risotto with goose leg and liver in Budapest, Hungary, January 24, 2017. Picture taken January 24, 2017. REUTERS/Laszlo Balogh

A visitor walks in the Galerie Vivienne, built in 1823, one of the most iconic covered arcades in Paris with its ready-to-wear boutiques, tea rooms, gourmet food boutiques, wine cellars, grocery shops, old bookshops art, and bistros, France, November 25, 2016. Picture taken November 25, 2016. REUTERS/Charles Platiau

Visitors walk in the Galerie Vivienne, built in 1823, one of the most iconic covered arcades in Paris with its ready-to-wear boutiques, tea rooms, gourmet food boutiques, wine cellars, grocery shops, old bookshops art, and bistros, France, November 25, 2016. Picture taken November 25, 2016. REUTERS/Charles Platiau

Visitor walk in the Galerie Vivienne, built in 1823, one of the most iconic covered arcades in Paris with its ready-to-wear boutiques, tea rooms, gourmet food boutiques, wine cellars, grocery shops, old bookshops art, and bistros, France, November 29, 2016. Picture taken November 29, 2016. REUTERS/Charles Platiau

Christmas illuminations are reflected on a bistrot table in the Galerie Vivienne, built in 1823, one of the most iconic covered arcades in Paris with its ready-to-wear boutiques, tea rooms, gourmet food boutiques, wine cellars, grocery shops, old bookshops art, and bistros, France, November 25, 2016. Picture taken November 25, 2016. REUTERS/Charles Platiau

A visitor walks in the Galerie Vivienne, built in 1823, one of the most iconic covered arcades in Paris with its ready-to-wear boutiques, tea rooms, gourmet food boutiques, wine cellars, grocery shops, old bookshops art, and bistros, France, November 25, 2016. Picture taken November 25, 2016. REUTERS/Charles Platiau

An Apfelstrudel - apple strudel - is pictured in a cafe in Vienna, Austria, November 22, 2016. REUTERS/Leonhard Foeger

An Apfelstrudel - apple strudel - is pictured in a cafe in Vienna, Austria, November 22, 2016. REUTERS/Leonhard Foeger

An Apfelstrudel - apple strudel - is pictured in a cafe in Vienna, Austria, November 22, 2016. REUTERS/Leonhard Foeger

Policemen search for water pipes inside a cafe during a raid confiscating shisha water pipes in Kabul, Afghanistan November 27, 2016. REUTERS/Mohammad Ismail TPX IMAGES OF THE DAY

Cafe patrons sit outside on an unseasonably warm day in the Brooklyn borough of New York, U.S., October 18, 2016. REUTERS/Lucas Jackson

Cafe patrons sit outside at an open air table and outside on an unseasonably warm day in the Brooklyn borough of New York, U.S., October 18, 2016. REUTERS/Lucas Jackson

A cup of latte coffee is pictured at a cafe in Sydney, Australia, May 12, 2014. REUTERS/Jason Reed/File Photo

Mr. (L) and Mrs. Burger featuring U.S. presidential candidates Donald Trump and Hillary Clinton are displayed with voting ballots at J.S. Burgers Cafe in Tokyo, Japan October 7, 2016. REUTERS/Megumi Lim

A customer Yuka Yamaura eats Mrs. Burger featuring U.S. presidential candidate Hillary Clinton at J.S. Burgers Cafe in Tokyo, Japan October 7, 2016. REUTERS/Megumi Lim

J.S. Burgers Cafe chef Yasuhito Fukui prepares Mr. and Mrs. Burger featuring the U.S. presidential candidates Hillary Clinton and Donald Trump at the hamburger joint in Tokyo, Japan October 7, 2016. REUTERS/Megumi Lim