A potter makes earthenware oil lamps or "Diyo" used to decorate temples and homes ahead of Tihar festival, also called Diwali, the Hindu festival of lights, in Bhaktapur, Nepal October 20, 2019. REUTERS/Navesh Chitrakar

A potter makes earthenware oil lamp or "Diyo" used to decorate temples and homes ahead of Tihar festival, also called Diwali, the Hindu festival of lights, in Bhaktapur, Nepal October 20, 2019. REUTERS/Navesh Chitrakar

A plate prepared with Rova caviar is seen at the Marais restaurant in Antananarivo, Madagascar, September 9, 2019. Picture taken September 9, 2019. REUTERS/Baz Ratner

Chef Herilalaina Ravelomanana prepares a plate with Rova caviar at the Marais restaurant in Antananarivo, Madagascar, September 9, 2019. Picture taken September 9, 2019. REUTERS/Baz Ratner

Typical German Currywurst (curried sausage) is pictured in Berlin, Germany, September 3, 2019. Picture taken September 3, 2019. REUTERS/Hannibal Hanschke

Typical German Currywurst (curried sausage) is pictured in Berlin, Germany, September 3, 2019. Picture taken September 3, 2019. REUTERS/Hannibal Hanschke

Typical German Currywurst (curried sausage) is pictured in Berlin, Germany, September 3, 2019. Picture taken September 3, 2019. REUTERS/Hannibal Hanschke

Typical German Currywurst (curried sausage) is pictured in Berlin, Germany, September 3, 2019. Picture taken September 3, 2019. REUTERS/Hannibal Hanschke

A tourist takes pictures of typical German Currywurst (curried sausage) in Berlin, Germany, September 3, 2019. Picture taken September 3, 2019. REUTERS/Hannibal Hanschke

Typical German Currywurst (curried sausage) is pictured in Berlin, Germany, September 3, 2019. Picture taken September 3, 2019. REUTERS/Hannibal Hanschke

Typical German Currywurst (curried sausage) is pictured in Berlin, Germany, September 3, 2019. Picture taken September 3, 2019. REUTERS/Hannibal Hanschke

A dish including a piece of lab-grown steak produced from cow cells by Israeli company Aleph Farms, is seen as it is prepared by a chef during a demonstration for Reuters at the company office in Rehovot, Israel June 26, 2019. REUTERS/Amir Cohen

A snack is seen on the table of Carlo Spinazzi's kitchen, in his illegally occupied apartment in Venice, Italy, April 1, 2019. "I am living with some savings I got from the closing-down sale of my shop that went bankrupt one year ago and from a family loan. But I am running out of money and I can't find a new job as I am considered too old", Spinazzi said. Picture taken April 1, 2019. REUTERS/Guglielmo Mangiapane

Utensils belonging to a tea shop lie in a pond before getting washed on Ghoramara Island, India, September 22, 2018. Ghoramara Island, part of the Sundarbans delta on the Bay of Bengal, has nearly halved in size over the past two decades, according to village elders. REUTERS/Rupak De Chowdhuri SEARCH "CHOWDHURI COASTLINE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A worker uses a grinder to give shape and shine to an iron plate as he makes a cooking utensil at a manufacturing unit in Kolkata, India, November 12, 2018. REUTERS/Rupak De Chowdhuri

A plate of Mojarra fish, also known as Gerreidae, is pictured at a seafood restaurant in Monterrey, Mexico November 9, 2018. REUTERS/Daniel Becerril

A chef serves flying squid sashimi at a seafood restaurant in Tokyo, Japan, September 27, 2018. Picture taken September 27, 2018. To match Special Report OCEANS-TIDE/FLYING SQUID REUTERS/Issei Kato

A waiter serves a breakfast with a dish of "Chilaquiles con huevo y crepas" at a restaurant in Monterrey city, Mexico, July 26, 2018. Picture taken July 26, 2018. REUTERS/Daniel Becerril

A breakfast is served at a restaurant in Monterrey city, Mexico, July 26, 2018. Picture taken July 26, 2018. REUTERS/Daniel Becerril

A piece of bread and a cup with coffee are seen in Mexico City, Mexico, July 26, 2018. Picture taken July 26, 2018. REUTERS/Luisa Gonzalez.

A piece of bread and a cup with coffee are seen in Mexico City, Mexico, July 26, 2018. Picture taken July 26, 2018. REUTERS/Luisa Gonzalez

Traditional breakfast food is seen at the "Wistupiku" restaurant in La Paz, Bolivia, July 20, 2018. REUTERS/David Mercado

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

A mohinga, a traditional breakfast rice-noodle dish with fish soup, is pictured at a restaurant in Yangon, Myanmar July, 20, 2018. REUTERS/Ann Wang

Women make the Vietnamese traditional beef noodle "Pho" at a breakfast restaurant in Hanoi, Vietnam July 18, 2018. REUTERS/Kham

Noodle with egg is seen on a table along a street during breakfast in Phnom Penh, Cambodia July 18, 2018. REUTERS/Samrang Pring

Fruits are displayed during a breakfast buffet at a restaurant in Ciudad Juarez, Mexico July 16, 2018. Picture taken July 16, 2018. REUTERS/Jose Luis Gonzalez

A customer puts yoghurt on fruits during breakfast buffet at a restaurant in Ciudad Juarez, Mexico July 16, 2018. Picture taken July 16, 2018. REUTERS/Jose Luis Gonzalez

Freshly-made juices are displayed during breakfast at a restaurant in Ciudad Juarez, Mexico July 16, 2018. Picture taken July 16, 2018. REUTERS/Jose Luis Gonzalez

A breakfast plate with ham and egg is pictured in Berlin, Germany, July 16, 2018. REUTERS/Fabrizio Bensch

A breakfast plate with ham and egg is pictured in Berlin, Germany, July 16, 2018. REUTERS/Fabrizio Bensch

A noodle breakfast seen in a restaurant in the northern province of Chiang Rai, Thailand, July 16, 2018. REUTERS/Soe Zeya Tun

Traditional Northern steamed rolls (Banh Cuon) are available for breakfast at a restaurant in Hanoi, Vietnam July 16, 2018. REUTERS/Kham

A woman makes traditional Northern steamed rolls (Banh Cuon) for sale at a breakfast restaurant in Hanoi, Vietnam July 16, 2018. REUTERS/Kham

A woman makes traditional Northern steamed rolls (Banh Cuon) for sale at a breakfast restaurant in Hanoi, Vietnam July 16, 2018. REUTERS/Kham

A coffee with milk is served in bakery in Vilassar de Dalt town, near Barcelona, Spain July 15, 2018. REUTERS/Albert Gea

A coffee with milk and a donut are served in bakery in Vilassar de Dalt town, near Barcelona, Spain July 15, 2018. REUTERS/Albert Gea

A waiter delivers a lunch of lobster, that was imported from Boston, U.S., at a sea food restaurant in Beijing, China July 5, 2018. Picture taken July 5, 2018. REUTERS/Jason Lee

Special red and blue shots offered at Escobar bar to mark the summit meeting between U.S. President Donald Trump and North Korean leader Kim Jong Un, are displayed on a table in Singapore June 4, 2018. REUTERS/Edgar Su TPX IMAGES OF THE DAY

Plates of pre-dawn Suhoor meals are seen during the Muslim Holy month of Ramadan in Cairo, Egypt, May 31, 2018. REUTERS/Mohamed Abd El Ghany

Shelves filled with kitchenware hang in a house in the mountains near Santo Domingo, Cuba, March 31, 2018. REUTERS/Alexandre Meneghini

A woman shops at the old market in the historic city of Sanaa, Yemen April 12, 2018. REUTERS/Mohamed al-Sayaghi TPX IMAGES OF THE DAY

A woman shops at the old market in the historic city of Sanaa, Yemen April 12, 2018. REUTERS/Mohamed al-Sayaghi

Miniature food cook Burcu Celenoglu Aydin prepares a dish at her mini kitchen in Istanbul, Turkey April 7, 2018. Picture taken April 7, 2018. REUTERS/Murad Sezer

Side dishes including (clockwise from top right) cabbage, sweet potatoes, collard greens, rice, beans and macaroni-and-cheese are ready to be served at Ms. Girlee's Soul Food Restaurant in Memphis, Tennessee, U.S., March 29, 2018. The restaurant is owned by Henry Leach and his family. Leach, who participated in the strike 50 years ago, said Martin Luther King came to the city for justice, not violence. "He came to help us get what we wanted. Like I tell you, he became like a father to us," the former sanitation worker said recently. REUTERS/Jonathan Ernst SEARCH "MLK ERNST" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A plate with traditional Korean kimchi is seen on a table of a restaurant at Jungang market in Gangneung, South Korea February 19, 2018. Picture taken February 19, 2018. REUTERS/ Jorge Silva

Vegetarian food is seen at "Go Green" restaurant in La Paz, Bolivia, February 2, 2018. Picture taken in February 2, 2018. REUTERS/David Mercado

Students take a vegetarian cooking class with Chef Jesus Serrano at the Institute of Haute Cuisine in Ciudad Juarez, Mexico January 29, 2018. Picture taken January 29, 2018. REUTERS/Jose Luis Gonzalez

A customer eats a vegetarian dish at Tasty Beet Juicy and Healthy Food restaurant in Ciudad Juarez, Mexico January 29, 2018. Picture taken January 29, 2018. REUTERS/Jose Luis Gonzalez

A vegan oat and chickpeas hamburger is pictured at Tasty Beet Juicy and Healthy Food restaurant in Ciudad Juarez, Mexico January 29, 2018. Picture taken January 29, 2018. REUTERS/Jose Luis Gonzalez

A customer self-serves a plate of food inside the 'Indian Veg' vegetarian restaurant in north London, Britain, January 28, 2017. REUTERS/Hannah McKay

An Arabic silver pot is seen for sale at an antique store in Islamabad, Pakistan January 16, 2018. REUTERS/Faisal Mahmood

Mohammad Ayas, a 12-year-old Rohingya refugee trader sells piazu at a stall in Palong Khali refugee camp near Cox's Bazar, Bangladesh, November 3, 2017. The 150 portions of piazu, made by his mother from the aid package the family received after fleeing violence in Myanmar, sell for 1 taka each, or a little more than 1 U.S. cent. "I started my trading here with the relief I got," Mohammad said. "I did not buy anything. I got this relief package five days ago and my mum made this piazu this morning." The price in Palong Khali refugee camp is 1 taka per piece. The price in Palong Khali Bazar is 1 taka per piece. REUTERS/Hannah McKay SEARCH "MCKAY TRADERS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY.

Hostess carries a set of truffles weighing 450 grams during the international auction for truffles at the Grinzane Castle in Grinzane Cavour near Alba, Italy, November 12, 2017. REUTERS/ Stefano Rellandini

A man makes final designs on a big copper plate at a workshop in Colombo, Sri Lanka October 24, 2017. REUTERS/Dinuka Liyanawatte

A worker prepares a sandwich in the Duran sandwich shop in Vienna, Austria September 29, 2017. REUTERS/Leonhard Foeger

A beef burger from "Eish & Malh" (or "Bread and Salt") is seen in the capital Cairo, Egypt September 26, 2017. REUTERS/Amr Abdallah Dalsh

Sisig, a local Filipino dish, is pictured at a restaurant in Manila, Philippines July 28, 2017. REUTERS/Dondi Tawatao

A beef steak is cut at the Taberna del Gijon restaurant in Madrid, Spain, July 26, 2017. REUTERS/Paul Hanna

An illustration picture shows a coffee cup near a laptop in Brussels, Belgium May 1, 2017. REUTERS/Eric Vidal/Illustration