A chef wearing protective gloves amid the coronavirus disease (COVID-19) outbreak, makes a salad at Setouchi Lemon Shokudo in Tokyo, Japan June 22, 2020. Picture taken June 22, 2020. REUTERS/Kim Kyung-Hoon

A woman prepares a green papaya salad, Som Tam after the government eased some protective measures following the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand June 19, 2020. REUTERS/Jorge Silva

A farm worker manually irrigates a salad field, amid the outbreak of the coronavirus disease (COVID-19), In Thies, Senegal June 3, 2020. Picture taken June 3, 2020. REUTERS/Zohra Bensemra

A farm worker manually irrigates a salad field, amid the outbreak of the coronavirus disease (COVID-19), In Thies, Senegal June 3, 2020. Picture taken June 3, 2020. REUTERS/Zohra Bensemra

A chef prepares salad at the Westin Bonaventure hotel as part of California Governor Gavin Newsom's program to use FEMA and local money to produce meals to deliver to at-risk seniors, as the global outbreak of the coronavirus disease (COVID-19) continues, in Los Angeles, California, U.S., May 7, 2020. REUTERS/Lucy Nicholson

A chef prepares salad at the Westin Bonaventure hotel as part of California Governor Gavin Newsom's program to use FEMA and local money to produce meals to deliver to at-risk seniors, as the global outbreak of the coronavirus disease (COVID-19) continues, in Los Angeles, California, U.S., May 7, 2020. REUTERS/Lucy Nicholson

Felix Hassebroek wears a salad spinner bowl and makes a face during the outbreak of the coronavirus disease (COVID-19) in Brooklyn, New York, U.S., May 6, 2020. REUTERS/Caitlin Ochs TPX IMAGES OF THE DAY

A staff member prepares a salad next to compostable food packaging at Mana Cafe in Wan Chai, Hong Kong, China April 14, 2020. Picture taken April 14, 2020. REUTERS/Pak Yiu

Salads and vegetables are offered on a farmer's market during the outbreak of coronavirus disease (COVID-19) in Hamburg, Germany, March 17, 2020. REUTERS/Fabian Bimmer

A plate of vegan halloumi salad is seen at a vegan restaurant in Lagos, Nigeria January 28, 2020. Picture taken January 28, 2020. REUTERS/Temilade Adelaja

A plate of vegan halloumi salad is pictured at a vegan restaurant in Lagos, Nigeria January 28, 2020. Picture taken January 28, 2020. REUTERS/Temilade Adelaja

Workers prepare orders in the kitchen at a Chopt Creative Salad Co., location in midtown Manhattan, in New York City, U.S., November 12, 2019. REUTERS/Brendan McDermid

A worker carries takeout orders for pickup at the at a Chopt Creative Salad Co., location in midtown Manhattan, in New York City, U.S., November 12, 2019. REUTERS/Brendan McDermid

A customer places an order at the newest Chopt Creative Salad Co., location in lower Manhattan, in New York City, U.S., November 12, 2019. REUTERS/Brendan McDermid

An order is placed out for pickup at the newest Chopt Creative Salad Co., location in lower Manhattan, in New York City, U.S., November 12, 2019. REUTERS/Brendan McDermid

A worker sets out orders for pickup at a Chopt Creative Salad Co., location in midtown Manhattan, in New York City, U.S., November 12, 2019. REUTERS/Brendan McDermid

A worker looks at a screen for the latest order at the newest Chopt Creative Salad Co., location in lower Manhattan, in New York City, U.S., November 12, 2019. REUTERS/Brendan McDermid

A customer picks up her order at a Chopt Creative Salad Co., location in midtown Manhattan, in New York City, U.S., November 12, 2019. REUTERS/Brendan McDermid

Orders are placed out for pickup at the newest Chopt Creative Salad Co., location in lower Manhattan, in New York City, U.S., November 12, 2019. REUTERS/Brendan McDermid

Workers prepare orders in the kitchen at the newest Chopt Creative Salad Co., location in lower Manhattan, in New York City, U.S., November 12, 2019. REUTERS/Brendan McDermid

Workers prepare orders in the kitchen at the newest Chopt Creative Salad Co., location in lower Manhattan, in New York City, U.S., November 12, 2019. REUTERS/Brendan McDermid

People pass by the newest Chopt Creative Salad Co., location in lower Manhattan, in New York City, U.S., November 12, 2019. REUTERS/Brendan McDermid

A worker prepares an order in the kitchen at the newest Chopt Creative Salad Co., location in lower Manhattan, in New York City, U.S., November 12, 2019. REUTERS/Brendan McDermid

Workers prepare orders in the kitchen at the newest Chopt Creative Salad Co., location in lower Manhattan, in New York City, U.S., November 12, 2019. REUTERS/Brendan McDermid

A worker sets out an order for pickup at the newest Chopt Creative Salad Co., location in lower Manhattan, in New York City, U.S., November 12, 2019. REUTERS/Brendan McDermid

A customer places an order at the newest Chopt Creative Salad Co., location in lower Manhattan, in New York City, U.S., November 12, 2019. REUTERS/Brendan McDermid

Chef and Plenty advisory board member Nancy Silverton prepares a salad during a demonstration in San Francisco, California, U.S., June 11, 2019. Picture taken June 11, 2019. REUTERS/Jane Lanhee Lee

Plenty CEO and co-founder Matt Barnard tastes a salad prepared by chef and Plenty advisory board member Nancy Silverton during a demonstration in San Francisco, California, U.S., June 11, 2019. Picture taken June 11, 2019. REUTERS/Jane Lanhee Lee

Hemp seed is pictured at a salad bar at Whole Foods Market in Evanston, Illinois, U.S., June 10, 2019. Picture taken June 10, 2019. REUTERS/Julie Ingwersen

Hemp seed from a salad bar at Whole Foods Market in Evanston, Illinois, is pictured in closeup in Chicago, Illinois, U.S. June 10, 2019. Picture taken June 10, 2019. REUTERS/Julie Ingwersen

Hemp seed is pictured at a salad bar at Whole Foods Market in Evanston, Illinois, U.S., June 10, 2019. Picture taken June 10, 2019. REUTERS/Julie Ingwersen

A food server places a salad atop a picture of U.S. former Vice President Joe Biden before he delivers remarks at the First State Democratic Dinner in Dover, Delaware, U.S. March 16, 2019. REUTERS/Jonathan Ernst

A combination photo shows a food server placing a salad atop a picture of U.S. former Vice President Joe Biden before he delivers remarks at the First State Democratic Dinner in Dover, Delaware, U.S. March 16, 2019. REUTERS/Jonathan Ernst

A food server places a salad atop a picture of U.S. former Vice President Joe Biden before he delivers remarks at the First State Democratic Dinner in Dover, Delaware, U.S. March 16, 2019. REUTERS/Jonathan Ernst

Amazon-branded salads on the shelves at a new smaller format Amazon Go store, open to Amazon employees and their guests, in the Blue Shift Amazon office space in downtown Seattle, Washington, U.S., December 10, 2018. Picture taken December 10, 2018. REUTERS/Lindsey Wasson

A sign at the drive-thru at a McDonalds restaurant announces "We Sorry Salad Unavailable" in Somerville, Massachusetts, U.S., November 26, 2018. REUTERS/Brian Snyder

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

Workers pack salads at Delicious Cook & Co's food factory in Narashino, Japan, April 17, 2018. REUTERS/Toru Hanai

Workers pack noodle salads at Delicious Cook & Co's food factory in Narashino, Japan, April 17, 2018. REUTERS/Toru Hanai

Workers pack noodle salads at Delicious Cook & Co's food factory in Narashino, Japan, April 17, 2018. REUTERS/Toru Hanai

Workers pack salads at Delicious Cook & Co's food factory in Narashino, Japan, April 17, 2018. REUTERS/Toru Hanai

Ready-to-eat salads are displayed on shelves at a Carrefour Hypermarket store in Montreuil, near Paris, France, February 5, 2018. REUTERS/Regis Duvignau

An employee prepares a salad in vegetarian restaurant "Green Cuisine" in Minsk, Belarus February 1, 2018. REUTERS/Vasily Fedosenko

An employee prepares a salad in vegetarian restaurant "Green Cuisine" in Minsk, Belarus February 1, 2018. REUTERS/Vasily Fedosenko

An employee holds a salad prepared in vegetarian restaurant "Green Cuisine" in Minsk, Belarus February 1, 2018. REUTERS/Vasily Fedosenko

An employee prepares a salad in vegetarian restaurant "Green Cuisine" in Minsk, Belarus February 1, 2018. REUTERS/Vasily Fedosenko

An employee prepares a salad in vegetarian restaurant "Green Cuisine" in Minsk, Belarus February 1, 2018. REUTERS/Vasily Fedosenko

A waiter presents two types of salad served by Habibi restaurant in Peshawar, Pakistan January 31, 2018. REUTERS/Fayaz Aziz

Chef Dyllan Armenta prepares a salad 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 eats a salad 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 Veganburg vegan hamburger is seen in this illustration photo January 30, 2018. REUTERS/Thomas White/Illustration

Customers browse packaged wraps, sandwiches and salads at Amazon's new "grab-and-go" store in Seattle, Washington, U.S., January 18, 2018. Photo taken January 18, 2018. REUTERS/Jeffrey Dastin

A worker fills an arepa with hen salad and avocado at a restaurant in Caracas, Venezuela December 19, 2017. Picture taken December 19, 2017. REUTERS/Marco Bello

A worker serves an arepa stuffed with cheese, hen salad and avocado at a restaurant in Caracas, Venezuela December 19, 2017. Picture taken December 19, 2017. REUTERS/Marco Bello

Packaged salads for sale are pictured inside a Whole Foods Market in the Manhattan borough of New York City, New York, U.S. June 16, 2017. REUTERS/Carlo Allegri

A French farmer holds dry earth from his salad field, after a dry winter and a warm spring reduced the ground water level in Sancourt near Cambrai, France May 31, 2017. REUTERS/Pascal Rossignol

A French farmer holds dry earth from his salad field, after a dry winter and a warm spring reduced the ground water levels affecting French agricultural regions, in Sancourt near Cambrai, France May 31, 2017. REUTERS/Pascal Rossignol

Lettuce varieties are displayed at the RHS Chelsea Flower Show in London, Britain May 21, 2017. REUTERS/Neil Hall

Bottles of salad dressing, made by food conglomerate Kraft Heinz, are seen on a supermarket shelf in Seattle, Washington, U.S., February 10, 2017. REUTERS/Chris Helgren

Salad bags are seen next to empty crates in a supermarket, in London, Britain February 3, 2017. REUTERS/Dylan Martinez