Langhe’s countryside and vineyards are seen in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

Langhe’s countryside and vineyards are seen in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

An Alba white truffle weighing 700 grams is pictured before the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

An Alba white truffle weighing 350 grams is pictured during the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

A set of Alba white truffles weighing 950 grams is pictured during the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

A set of Alba white truffles weighing 950 grams is pictured during the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

A set of Alba white truffle weighing 950 grams is pictured during the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

Alba white truffles are pictured before the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

Alba white truffles are pictured before the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

Italian television presenter and actress Caterina Balivo holds a set of Alba white truffles weighing 950 grams during the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

Italian television presenter and actress Caterina Balivo holds an Alba white truffle during the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

A set of Alba white truffles weighing 950 grams is pictured during the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

A set of Alba white truffles weighing 950 grams is pictured during the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

An Alba white truffle weighing 700 grams is pictured before the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

An Alba white truffle weighing 700 grams is pictured before the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

An Alba white truffle weighing 700 grams is pictured before the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

An Alba white truffle weighing 700 grams is pictured before the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

An Alba white truffle weighing 700 grams is pictured before the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 13, 2022. REUTERS/Alessandro Garofalo 

A general view of the Castle of Grinzane Cavour in Grinzane Cavour near Alba, northwestern Italy, November 14, 2021. REUTERS/Massimo Pinca 

Italian television presenter and actress Caterina Balivo calls bids for White Alba truffles up for auction during the international auction for truffles at the Castle of Grinzane Cavour in Grinzane Cavour near Alba, northwestern Italy, November 14, 2021. REUTERS/Massimo Pinca 

Italian television presenter and actress Caterina Balivo calls bids for White Alba truffles up for auction during the international auction for truffles at the Castle of Grinzane Cavour in Grinzane Cavour near Alba, northwestern Italy, November 14, 2021. REUTERS/Massimo Pinca 

A set of white Alba truffles weighing 850 grams is seen during the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 14, 2021. REUTERS/Massimo Pinca 

A set of white Alba truffles weighing 850 grams is seen during the international auction for truffles at the Castle of Grinzane Cavour, in Grinzane Cavour near Alba, Italy, November 14, 2021. REUTERS/Massimo Pinca TPX IMAGES OF THE DAY 

White Alba truffles are picture before the international auction for truffles at the Castle of Grinzane Cavour in Grinzane Cavour near Alba, northwestern Italy, November 14, 2021. REUTERS/Massimo Pinca 

White Alba truffles are picture before the international auction for truffles at the Castle of Grinzane Cavour in Grinzane Cavour near Alba, northwestern Italy, November 14, 2021. REUTERS/Massimo Pinca 

Italian actor Enzo Iacchetti holds truffles besides Italian Television presenter and actress Caterina Balivo during the international auction for truffles at the Castle of Grinzane Cavour in Grinzane Cavour near Alba, northwestern Italy, November 14, 2021. REUTERS/Massimo Pinca 

White Alba truffles are picture before the international auction for truffles at the Castle of Grinzane Cavour in Grinzane Cavour near Alba, northwestern Italy, November 14, 2021. REUTERS/Massimo Pinca 

Women search for truffles in the desert in Samawa, Iraq, February 23, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

A woman extracts truffles in the desert in Samawa, Iraq, February 23, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

Abu Jakka Farhan, a truffle hunter, is pushed in a wheelchair as he searches for truffles in the desert in Samawa, Iraq, February 23, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES TPX IMAGES OF THE DAY 

Hussein Abu Ali (right), a car driver, carries boxes of truffles in the desert in Samawa, Iraq February 23, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

Truffles are displayed for a photo in the desert in Samawa, Iraq, February 23, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

Women extract truffles in the desert in Samawa, Iraq, February 23, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

Zahra Buheir, 72, a truffle hunter, smokes a cigarette in the desert in Samawa, Iraq, February 23, 2021. "Here it is, the truffle, a blessing from God!" said Buheir. "Rain came, and then thunder, bringing truffles up to the surface." REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

A child carries a basket of truffles in the desert in Samawa, Iraq, February 23, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

A woman extracts truffles from the soil in the desert in Samawa, Iraq, February 23, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

The tent of Abu Jakka Farhan, a truffle hunter, sits in the desert in Samawa, Iraq, February 23, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

Mohsen Farhan, 31, a truffle hunter, eats food with his family in a tent in the desert in Samawa, Iraq, February 23, 2021. "When there is no work, truffles are a source of income. And we are happy here," said Farhan. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

Abu Jakka Farhan, a truffle hunter, sits in the desert in Samawa, Iraq, March 1, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

Zahra Buheir, 72, a truffle hunter, makes bread in the desert in Samawa, Iraq, March 1, 2021. "Here it is, the truffle, a blessing from God!" said Buheir. "Rain came, and then thunder, bringing truffles up to the surface." REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

Salma Mohsen, 10, poses for a photo holding a truffle, in the desert in Samawa, Iraq, February 23, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

Ra'ad Abdelemir, a trader, sorts truffles in a tent at a market in Samawa, Iraq, February 22, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES TPX IMAGES OF THE DAY 

Truffle sellers stand at a market in the city of Samawa, Iraq, February 22, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

A truffle seller sits at a market in the city of Samawa, Iraq, February 22, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

People eat truffles at the restaurant Beit al-Hatab, in Samawa, Iraq, February 22, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

A worker cooks a meal with truffles at the restaurant Beit al-Hatab, in the city of Samawa, Iraq, March 2, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

A man buys truffles at a market in the city of Samawa, Iraq, February 22, 2021. REUTERS/Alaa Al-Marjani SEARCH "TRUFFLES SAMAWA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

Pasta with truffle is seen in Zigante restaurant in Livade village, Croatia, November 25, 2020. Picture taken November 25, 2020. REUTERS/Antonio Bronic 

General view of Motovun is seen through the fog, Croatia, November 26, 2020. Picture taken with a drone. REUTERS/Antonio Bronic 

Nikola Tarandek truffle hunter poses with found truffle, near Motovun, Croatia, November 25, 2020. Picture taken November 25, 2020. REUTERS/Antonio Bronic 

General view of Motovun is seen through the fog, Croatia, November 26, 2020. Picture taken with a drone. REUTERS/Antonio Bronic 

Nikola Tarandek, truffle hunter cleans found truffle, near Motovun, Croatia, November 25, 2020. Picture taken November 25, 2020. REUTERS/Antonio Bronic 

Nikola Tarandek, truffle hunter shows found truffle in the ground, near Motovun, Croatia, November 25, 2020. Picture taken November 25, 2020. REUTERS/Antonio Bronic 

Nikola Tarandek, truffle hunter cleans found truffle, near Motovun, Croatia, November 25, 2020. Picture taken November 25, 2020. REUTERS/Antonio Bronic 

James Knappett, founder and head chef of 'Home', the first at-home fine dining experience, puts truffles into a tub in a kitchen in London, Britain, November 18, 2020. Picture taken November 18, 2020. REUTERS/Simon Dawson 

Britain's Prince William sits with Ivan Mother aged 5 as they make chocolate truffles at a Christmas Party for the families of service personnel from RAF Marnham and RAF Coningsby deployed in Cyprus, at Kensington Palace in London, Britain, December 4, 2018. Richard Pohle/Pool REUTERS 

Britain's Prince William sits with Harry O'Grady aged 5 as they make chocolate truffles at a Christmas Party for the families of service personnel from RAF Marnham and RAF Coningsby deployed in Cyprus, at Kensington Palace in London, Britain, December 4, 2018. Richard Pohle/Pool REUTERS 

Britain's Prince William sits with Spencer Best aged 5 as they make chocolate truffles at a Christmas Party for the families of service personnel from RAF Marnham and RAF Coningsby deployed in Cyprus, at Kensington Palace in London, Britain, December 4, 2018. Richard Pohle/Pool REUTERS 

Truffle farmer holds a Black truffles (Truffes du Perigord) at a truffle market in Sainte-Alvere, France, December 18, 2017. REUTERS/Regis Duvignau TPX IMAGES OF THE DAY