A man roasts marshmallows over volcano lava during an eruption of the Pacaya volcano at San Vicente de Sales municipality in the Escuintla region, Guatemala May 8, 2021. Picture taken May 8, 2021. REUTERS/Luis Echeverria

Doses of the Chinese Sinopharm vaccine against the coronavirus disease (COVID-19) are seen at a restaurant in Kragujevac, Serbia, May 4, 2021. At the Biblioteka kod Milutina restaurant whoever decides to get vaccinated is served a free meal on Tuesday, as a one-time offer to promote vaccination and contribute to the reopening of cafes, restaurants and bars. REUTERS/Marko Djurica

Doses of the Chinese Sinopharm vaccine against the coronavirus disease (COVID-19) are seen at a restaurant in Kragujevac, Serbia, May 4, 2021. At the Biblioteka kod Milutina restaurant whoever decides to get vaccinated is served a free meal on Tuesday, as a one-time offer to promote vaccination and contribute to the reopening of cafes, restaurants and bars. REUTERS/Marko Djurica

Doses of the Chinese Sinopharm vaccine against the coronavirus disease (COVID-19) are seen at a restaurant in Kragujevac, Serbia, May 4, 2021. At the Biblioteka kod Milutina restaurant whoever decides to get vaccinated is served a free meal on Tuesday, as a one-time offer to promote vaccination and contribute to the reopening of cafes, restaurants and bars. REUTERS/Marko Djurica

Doses of the Chinese Sinopharm vaccine against the coronavirus disease (COVID-19) are seen at a restaurant in Kragujevac, Serbia, May 4, 2021. At the Biblioteka kod Milutina restaurant whoever decides to get vaccinated is served a free meal on Tuesday, as a one-time offer to promote vaccination and contribute to the reopening of cafes, restaurants and bars. REUTERS/Marko Djurica

A man receives a dose of the Chinese Sinopharm vaccine against the coronavirus disease (COVID-19) at restaurant in Kragujevac, Serbia, May 4, 2021. At the Biblioteka kod Milutina restaurant whoever decides to get vaccinated is served a free meal on Tuesday, as a one-time offer to promote vaccination and contribute to the reopening of cafes, restaurants and bars. REUTERS/Marko Djurica

Customers have their meals at a restaurant where people are receiving doses of the Chinese Sinopharm vaccine against the coronavirus disease (COVID-19) in Kragujevac, Serbia, May 4, 2021. At the Biblioteka kod Milutina restaurant whoever decides to get vaccinated is served a free meal on Tuesday, as a one-time offer to promote vaccination and contribute to the reopening of cafes, restaurants and bars. REUTERS/Marko Djurica

An ox is roasted in front of a restaurant where people are receiving doses of the Chinese Sinopharm vaccine against the coronavirus disease (COVID-19) in Kragujevac, Serbia, May 4, 2021. At the Biblioteka kod Milutina restaurant whoever decides to get vaccinated is served a free meal on Tuesday, as a one-time offer to promote vaccination and contribute to the reopening of cafes, restaurants and bars. REUTERS/Marko Djurica

A man prepares roasted ox in front of a restaurant where people are receiving doses of the Chinese Sinopharm vaccine against the coronavirus disease (COVID-19) in Kragujevac, Serbia, May 4, 2021. At the Biblioteka kod Milutina restaurant whoever decides to get vaccinated is served a free meal on Tuesday, as a one-time offer to promote vaccination and contribute to the reopening of cafes, restaurants and bars. REUTERS/Marko Djurica

People wait to receive doses of the Chinese Sinopharm vaccine against the coronavirus disease (COVID-19) at restaurant in Kragujevac, Serbia, May 4, 2021. At the Biblioteka kod Milutina restaurant whoever decides to get vaccinated is served a free meal on Tuesday, as a one-time offer to promote vaccination and contribute to the reopening of cafes, restaurants and bars. REUTERS/Marko Djurica REFILE - CORRECTING MONTH


A man prepares to receive a dose of the Chinese Sinopharm vaccine against the coronavirus disease (COVID-19) at restaurant in Kragujevac, Serbia, May 4, 2021. At the Biblioteka kod Milutina restaurant whoever decides to get vaccinated is served a free meal on Tuesday, as a one-time offer to promote vaccination and contribute to the reopening of cafes, restaurants and bars. REUTERS/Marko Djurica REFILE - CORRECTING MONTH


A woman prepares to receive a dose of the Chinese Sinopharm vaccine against the coronavirus disease (COVID-19) at restaurant in Kragujevac, Serbia, May 4, 2021. At the Biblioteka kod Milutina restaurant whoever decides to get vaccinated is served a free meal on Tuesday, as a one-time offer to promote vaccination and contribute to the reopening of cafes, restaurants and bars. REUTERS/Marko Djurica REFILE - CORRECTING MONTH

People wait to receive doses of the Chinese Sinopharm vaccine against the coronavirus disease (COVID-19) at a restaurant in Kragujevac, Serbia, May 4, 2021. At the Biblioteka kod Milutina restaurant whoever decides to get vaccinated is served a free meal on Tuesday, as a one-time offer to promote vaccination and contribute to the reopening of cafes, restaurants and bars. REUTERS/Marko Djurica REFILE - CORRECTING MONTH


A man receives a dose of the Chinese Sinopharm vaccine against the coronavirus disease (COVID-19) at a restaurant in Kragujevac, Serbia, May 4, 2021. At the Biblioteka kod Milutina restaurant whoever decides to get vaccinated is served a free meal on Tuesday, as a one-time offer to promote vaccination and contribute to the reopening of cafes, restaurants and bars. REUTERS/Marko Djurica REFILE - CORRECTING MONTH

Jeremy Torz, co-founder of Union Hand-Roasted Coffee, where Coffea stenophylla coffee surprised expert tasters, poses with some coffee beans in London, Britain, April 15, 2021. Picture taken April 15, 2021. REUTERS/Stuart McDill

Jeremy Torz, co-founder of Union Hand-Roasted Coffee, where Coffea stenophylla coffee surprised expert tasters, poses with some coffee beans in London, Britain, April 15, 2021. Picture taken April 15, 2021. REUTERS/Stuart McDill

Fourteen-year-old Adan Muez is helped to sit up in his bed at Adigrat General Hospital in the town of Adigrat, Tigray region, Ethiopia, March 18, 2021. Adan used to be "strong as a lion" before he spent months hiding in a cave in Ethiopia's northern region of Tigray, his uncle said. "We were hiding and living in a cave for more than three months because of the war. We were only eating roasted barley," said Tadesse Aregawi by his nephew's bed, the boy labouring to breath beside him. On May 4, 2021, Adan was referred to Ayder University hospital in Tigray's capital of Mekelle. Adigrat hospital had run out of the fortified milk and medication they were using to treat him. But Ayder hospital had no record of the boy's admission and Reuters has been unable to locate the family. Picture taken March 18, 2021. REUTERS/Baz Ratner

Fourteen-year-old Adan Muez is helped to sit up in his bed at Adigrat General Hospital in the town of Adigrat, Tigray region, Ethiopia, March 18, 2021. Adan used to be "strong as a lion" before he spent months hiding in a cave in Ethiopia's northern region of Tigray, his uncle said. "We were hiding and living in a cave for more than three months because of the war. We were only eating roasted barley," said Tadesse Aregawi by his nephew's bed, the boy labouring to breath beside him. On May 4, 2021, Adan was referred to Ayder University hospital in Tigray's capital of Mekelle. Adigrat hospital had run out of the fortified milk and medication they were using to treat him. But Ayder hospital had no record of the boy's admission and Reuters has been unable to locate the family. Picture taken March 18, 2021. REUTERS/Baz Ratner

Fourteen-year-old Adan Muez lies in a bed at Adigrat General Hospital in the town of Adigrat, Tigray region, Ethiopia, March 18, 2021. Adan used to be "strong as a lion" before he spent months hiding in a cave in Ethiopia's northern region of Tigray, his uncle said. "We were hiding and living in a cave for more than three months because of the war. We were only eating roasted barley," said Tadesse Aregawi by his nephew’s bed, the boy labouring to breath beside him. On May 4, 2021, Adan was referred to Ayder University hospital in Tigray's capital of Mekelle. Adigrat hospital had run out of the fortified milk and medication they were using to treat him. But Ayder hospital had no record of the boy's admission and Reuters has been unable to locate the family. Picture taken March 18, 2021. REUTERS/Baz Ratner

Fourteen-year-old Adan Muez is helped to sit up in his bed at Adigrat General Hospital in the town of Adigrat, Tigray region, Ethiopia, March 18, 2021. Adan used to be "strong as a lion" before he spent months hiding in a cave in Ethiopia’s northern region of Tigray, his uncle said. "We were hiding and living in a cave for more than three months because of the war. We were only eating roasted barley," said Tadesse Aregawi by his nephew's bed, the boy labouring to breath beside him. On May 4, 2021, Adan was referred to Ayder University hospital in Tigray's capital of Mekelle. Adigrat hospital had run out of the fortified milk and medication they were using to treat him. But Ayder hospital had no record of the boy's admission and Reuters has been unable to locate the family. Picture taken March 18, 2021. REUTERS/Baz Ratner

Women, dressed in traditional clothes, gather as they roast peanuts during a celebration to mark International Women's Day, at the village of Sahel, in the mostly Berber Kabylie region in the mountains east of Algiers, Algeria March 6, 2021. Picture taken March 6, 2021. REUTERS/Abdelaziz Boumzar

Kaiserschmarrn for takeaway is roasted in butter at Viennese confectioner Demel in Vienna, Austria February 11, 2021. REUTERS/Lisi Niesner REFILE - CORRECTING YEAR

An employee reaches for roasted meat in the display window at HK BBQ Master on No. 3 Road, a Hong Kong style barbecue that is a crowd favourite among Hong Kongers in Richmond, British Columbia, Canada January 26, 2021. Picture taken January 26, 2021. REUTERS/Jennifer Gauthier

A label for British roast chicken salad is seen beside a notice on an empty shelf at a Marks & Spencer store in Galway, Ireland, January 6, 2021. REUTERS/Clodagh Kilcoyne

A street vendor sells roasted chestnuts on Via Frattina, as Italy goes back to a complete lockdown during Christmas season as part of efforts put in place to curb the spread of the coronavirus disease (COVID-19), in Rome, Italy, December 24, 2020. REUTERS/Yara Nardi TPX IMAGES OF THE DAY

A worker wearing a face mask as protection against the coronavirus disease (COVID-19) carries a pig on a bamboo pole at a roasting pit, in Manila, Philippines, December 21, 2020. REUTERS/Lisa Marie David

A worker roasts a row of pigs on bamboo poles at a roasting pit, in Manila, Philippines, December 21, 2020. REUTERS/Lisa Marie David

A worker wearing a face mask as protection against the coronavirus disease (COVID-19) carries a pig on bamboo pole at a roasting pit, in Manila, Philippines, December 21, 2020. REUTERS/Lisa Marie David

A worker roasts a row of pigs on bamboo poles at a roasting pit, in Manila, Philippines, December 21, 2020. REUTERS/Lisa Marie David

A worker roasts a row of pigs on bamboo poles at a roasting pit, in Manila, Philippines, December 21, 2020. REUTERS/Lisa Marie David

A worker wearing a face mask as protection against the coronavirus disease (COVID-19) pushes a cart of roasted pigs, locally known as "lechon," at a roasting pit, in Manila, Philippines, December 21, 2020. REUTERS/Lisa Marie David

A worker wearing a face mask and a face shield as protection against the coronavirus disease (COVID-19) pushes a cart of roasted pigs, locally known as "lechon," along a road, in Quezon City, Metro Manila, Philippines, December 21, 2020. REUTERS/Lisa Marie David

Workers wearing face masks as a protection against the coronavirus disease (COVID-19) carry roasted pigs, locally known as "lechon," at a restaurant, in Quezon City, Metro Manila, Philippines, December 21, 2020. REUTERS/Lisa Marie David

Workers wearing face masks as protection against the coronavirus disease (COVID-19) prepare roasted pigs, locally known as "lechon," at a restaurant, in Quezon City, Metro Manila, Philippines, December 21, 2020. REUTERS/Lisa Marie David

A worker wearing a face mask as a protection against the coronavirus disease (COVID-19) arranges roasted pigs on the display at a restaurant, in Quezon City, Metro Manila, Philippines, December 21, 2020. REUTERS/Lisa Marie David

A row of pigs on bamboo poles is roasted at a roasting pit, in Manila, Philippines, December 21, 2020. REUTERS/Lisa Marie David

A worker wearing a face mask as a protection against the coronavirus disease (COVID-19) arranges roasted pigs, locally known as "lechon," at a restaurant, in Quezon City, Metro Manila, Philippines, December 21, 2020. REUTERS/Lisa Marie David

A woman wearing a mask holds a roasted maize cob while chatting to a customer, amid the coronavirus disease (COVID-19) pandemic at the the Freedom Park informal settlement in the south of Johannesburg, South Africa, December 18, 2020. REUTERS/Siphiwe Sibeko

A trader sells roasted chestnuts from his stall, as the spread of the coronavirus disease (COVID-19) continues, in Zurich, Switzerland November 28, 2020. REUTERS/Arnd Wiegmann

People wearing protective masks walk past by a street vendor selling roasted chestnuts, amid the spread of coronavirus disease (COVID-19), in Istanbul, Turkey November 10, 2020. REUTERS/Murad Sezer

Glovo delivery couriers show purchase orders on their mobile phones to a roast-chicken seller on a street, as authorities ordered bars and restaurants to close as part of a new set of coronavirus disease (COVID-19) restrictions issued in Catalonia, in Barcelona, Spain October 18, 2020. REUTERS/Nacho Doce

Maasai youth roast meat for the celebrants before attending the Olng'esherr (meat-eating) passage ceremony to unite two age-sets; the older Ilpaamu and the younger Ilaitete into senior elder-hood as the final rite of passage, after the event was initially postponed due to the coronavirus disease (COVID-19) outbreak in Maparasha hills of Kajiado, Kenya September 23, 2020. REUTERS/Thomas Mukoya

Maasai youth roast meat for the celebrants before attending the Olng'esherr (meat-eating) passage ceremony to unite two age-sets; the older Ilpaamu and the younger Ilaitete into senior elder-hood as the final rite of passage, after the event was initially postponed due to the coronavirus disease (COVID-19) outbreak in Maparasha hills of Kajiado, Kenya September 23, 2020. REUTERS/Thomas Mukoya

People dine at the Quanjude Peking roast duck restaurant, following the coronavirus disease (COVID-19) outbreak, in Beijing, China August 18, 2020. REUTERS/Tingshu Wang

A staff member wearing a face mask puts on a card showing her new job role as an anti-food waste supervisor, at the Quanjude Peking roast duck restaurant in Beijing, China August 18, 2020. REUTERS/Tingshu Wang

People dine at the Quanjude Peking roast duck restaurant, following the coronavirus disease (COVID-19) outbreak, in Beijing, China August 18, 2020. REUTERS/Tingshu Wang

A chef chops duck meat slices for customers at the Quanjude Peking roast duck restaurant in Beijing, China August 18, 2020. REUTERS/Tingshu Wang

A staff member wearing a face mask following the coronavirus disease (COVID-19) outbreak prepares a dish at the Quanjude Peking roast duck restaurant in Beijing, China August 18, 2020. REUTERS/Tingshu Wang

A chef wearing a face mask following the coronavirus disease (COVID-19) outbreak moves a raw duck to the oven at the Quanjude Peking roast duck restaurant in Beijing, China August 18, 2020. REUTERS/Tingshu Wang

A staff member who is also an anti-food waste supervisor, holds a tray at the Quanjude Roast Duck restaurant, following the coronavirus disease (COVID-19) outbreak in Beijing, China August 18, 2020. REUTERS/Tingshu Wang

A waitress serves dishes for customers at the Quanjude Peking roast duck restaurant, following the coronavirus disease (COVID-19) outbreak, in Beijing, China August 18, 2020. REUTERS/Tingshu Wang

Staff members wearing face masks following the coronavirus disease (COVID-19) outbreak gather for a morning meeting before starting a shift at the Quanjude Peking roast duck restaurant in Beijing, China August 18, 2020. REUTERS/Tingshu Wang

A street vendor prepares a roasted pork meat taco as customers wait at a street food stall outside a market known as La Merced as the coronavirus disease (COVID-19) outbreak continues, in Mexico City, Mexico June 25, 2020. REUTERS/Henry Romero

A Palestinian worker shows roasted green wheat freekeh, a Middle Eastern cereal dish, amid concerns about the spread of the coronavirus disease (COVID-19), near Jenin in the Israeli-occupied West Bank May 4, 2020. Picture taken May 4, 2020. REUTERS/Mohamad Torokman

A vendor wearing a protective mask prepares roast chickens consumed during Ramadan fasting, amid the coronavirus disease (COVID-19) outbreak, in Kuala Lumpur, Malaysia April 28, 2020. REUTERS/Lim Huey Teng

Zhang Jun whose dumpling restaurant went out of business after the coronavirus disease (COVID-19) outbreak, is seen inside a roast duck restaurant that has yet resumed business, in Beijing, China April 2, 2020. Picture taken April 2, 2020. REUTERS/Tingshu Wang TPX IMAGES OF THE DAY

Christos Kourtelis prepares spit-roasted lamb as his son Spiros looks on at their house on Easter Sunday, during a nationwide lockdown to prevent the spread of the coronavirus disease (COVID-19) outbreak in Athens, Greece, April 19, 2020. REUTERS/Alkis Konstantinidis

Vassilis Kourtelis dances as his son Christos prepares spit-roasted lamb at their house on Easter Sunday, during a nationwide lockdown to prevent the spread of the coronavirus disease (COVID-19) outbreak in Athens, Greece, April 19, 2020. REUTERS/Alkis Konstantinidis

Vassilis Kourtelis dances as his son Christos prepares spit-roasted lamb at their house on Easter Sunday, during a nationwide lockdown to prevent the spread of the coronavirus disease (COVID-19) outbreak in Athens, Greece, April 19, 2020. REUTERS/Alkis Konstantinidis

A man prepares kokoretsi, a traditional Easter spit-roasted dish, with the Acropolis hill seen in the background on Easter Sunday, during a nationwide lockdown to prevent the spread of the coronavirus disease (COVID-19) outbreak in Athens, Greece, April 19, 2020. REUTERS/Alkis Konstantinidis