Students from St Andrews University are covered in foam as they take part in the traditional "Raisin Weekend" in the Lower College Lawn, at St Andrews in Scotland, Britain October 18, 2021. REUTERS/Russell Cheyne 

Students from St Andrews University are covered in foam as they take part in the traditional "Raisin Weekend" in the Lower College Lawn, at St Andrews in Scotland, Britain October 18, 2021. REUTERS/Russell Cheyne 

Students from St Andrews University are covered in foam as they take part in the traditional "Raisin Weekend" in the Lower College Lawn, at St Andrews in Scotland, Britain October 18, 2021. REUTERS/Russell Cheyne TPX IMAGES OF THE DAY 

Students from St Andrews University are covered in foam as they take part in the traditional "Raisin Weekend" in the Lower College Lawn, at St Andrews in Scotland, Britain October 18, 2021. REUTERS/Russell Cheyne 

Students from St Andrews University kiss each other, as they are covered in foam during the traditional "Raisin Weekend" in the Lower College Lawn, at St Andrews in Scotland, Britain October 18, 2021. REUTERS/Russell Cheyne 

Vendors strain raisin juice at a shop during the holy month of Ramadan in Mosul, Iraq, April 17, 2021. Picture taken April 17, 2021. REUTERS/Khalid Al-Mousily 

Vendors prepare raisins for juice at a shop during the holy month of Ramadan in Mosul, Iraq, April 17, 2021. Picture taken April 17, 2021. REUTERS/Khalid Al-Mousily 

A man pours raisin juice for his family as they eat their Iftar (breaking fast) meal during the holy month of Ramadan in Mosul Iraq, April 18, 2021. Picture taken April 18, 2021. REUTERS/Khalid Al-Mousily 

Vendors fill plastic bags with raisin juice for sale during the holy month of Ramadan at a shop in Mosul, Iraq, April 17, 2021 Picture taken April 17, 2021. REUTERS/Khalid Al-Mousily 

Vendors strain raisin juice at a shop during the holy month of Ramadan in Mosul, Iraq, April 17, 2021. Picture taken April 17, 2021. REUTERS/Khalid Al-Mousily 

Vendors strain raisin juice at a shop during the holy month of Ramadan in Mosul, Iraq, April 17, 2021. Picture taken April 17, 2021. REUTERS/Khalid Al-Mousily 

A vendor strains raisin juice at a shop during the holy month of Ramadan in Mosul, Iraq, April 17, 2021. Picture taken April 17, 2021. REUTERS/Khalid Al-Mousily 

People buy raisin juice from a shop during the holy month of Ramadan in Mosul, Iraq, April 17, 2021 Picture taken April 17, 2021. REUTERS/Khalid Al-Mousily 

David and Sandy Blades keep a social distance with their dogs Raisin and Trixie due to the coronavirus disease (COVID-19) pandemic as they enjoy the boardwalk in Rehoboth Beach, Delaware, U.S. January 2, 2021. REUTERS/Jonathan Ernst REFILE - CORRECTING CITY NAME 

Baker Sebastian Bruecklmaier prepares a filling consisting of nuts and raisins for Stollen (Christmas cake) at his bakery, which reportedly counts Britain's Queen among their clients, in Munich, Germany, December 14, 2020. REUTERS/Andreas Gebert 

Douglas C-47 aircrafts, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, are pictured as they fly over former Tempelhof airfield to mark the 70th anniversary of the Berlin Airlift in Berlin, Germany, June 16, 2019. REUTERS/Fabrizio Bensch 

Douglas C-47 and DC-3 aircrafts, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, approach former Tempelhof airfield to mark the 70th anniversary of the Berlin Airlift in Berlin, Germany, June 16, 2019. REUTERS/Fabrizio Bensch 

Johannes-Sebastian Strauss uses his mobile phone as Douglas C-47 and DC-3 aircrafts, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, fly over former Tempelhof airfield to mark the 70th anniversary of the Berlin Airlift in Berlin, Germany, June 16, 2019. REUTERS/Fabrizio Bensch 

People watch the Douglas C-47 and DC-3, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, as the fly over former Tempelhof airfield to mark the 70th anniversary of the Berlin Airlift in Berlin, Germany, June 16, 2019. REUTERS/Fabrizio Bensch 

Douglas C-47 and DC-3 aircrafts, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, fly over former Tempelhof airfield to mark the 70th anniversary of the Berlin Airlift in Berlin, Germany, June 16, 2019. REUTERS/Fabrizio Bensch TPX IMAGES OF THE DAY 

Douglas C-47 and DC-3 aircrafts, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, fly over former Tempelhof airfield to mark the 70th anniversary of the Berlin Airlift in Berlin, Germany, June 16, 2019. REUTERS/Fabrizio Bensch 

Douglas C-47 and DC-3 aircrafts, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, fly over former Tempelhof airfield to mark the 70th anniversary of the Berlin Airlift in Berlin, Germany, June 16, 2019. REUTERS/Fabrizio Bensch 

Douglas C-47 and DC-3 aircrafts, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, fly over former Tempelhof airfield to mark the 70th anniversary of the Berlin Airlift in Berlin, Germany, June 16, 2019. REUTERS/Fabrizio Bensch 

Douglas C-47 aircrafts, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, fly over former Tempelhof airfield to mark the 70th anniversary of the Berlin Airlift in Berlin, Germany, June 16, 2019. REUTERS/Fabrizio Bensch 

People watch the Douglas C-47 and DC-3, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, as they fly over former Tempelhof airfield to mark the 70th anniversary of the Berlin Airlift in Berlin, Germany, June 16, 2019. REUTERS/Fabrizio Bensch 

Douglas C-47 and DC-3 aircrafts, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, fly over former Tempelhof airfield to mark the 70th anniversary of the Berlin Airlift in Berlin, Germany, June 16, 2019. REUTERS/Fabrizio Bensch 

Original Douglas C-47 and DC-3, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, are pictured during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski TPX IMAGES OF THE DAY 

An original Douglas C-47, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, stands on the tarmac during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. Army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

An original Douglas C-47, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, is greeted with a water cannon salute during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. Army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

Original Douglas C-47 and DC-3, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, are pictured during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

Original Douglas C-47 and DC-3, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, are pictured during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

Original Douglas C-47 and DC-3, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, are pictured during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

Original Douglas C-47 and DC-3, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, are pictured during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

An original Douglas C-47 flies over a DC-3, also known colloquially as "Rosinenbomber" (German for "Raisin bomber") and used during the Berlin Airlift, during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

An original Douglas DC-3, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, is pictured during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. Army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

Original Douglas DC-3 airliners, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, are pictured during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. Army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

Original Douglas DC-3 airliners, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, are pictured during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. Army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

A visitor takes a picture of an original Douglas DC-3, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. Army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

A visitor takes a picture of an original Douglas DC-3, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. Army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

An original Douglas C-47, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, stands on the tarmac during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. Army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

An original Douglas C-47, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, stands on the tarmac during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. Army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

An original Douglas C-47, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, stands on the tarmac during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. Army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

An original Douglas C-47, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift, stands on the tarmac during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. Army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

Original Douglas C-47, also known colloquially as "Rosinenbomber" (German for "raisin bomber") and used during the Berlin Airlift , stand on the tarmac during a celebration to mark the 70th anniversary of the Berlin Airlift at the U.S. Army's airfield in Wiesbaden, Germany, June 10, 2019. REUTERS/Ralph Orlowski 

Visitors look at an original Douglas C-54, so called "Rosinenbomber" (German for "Raisin bomber"), used at the Berlin Airlift, during a celebration to mark the 70th anniversary of the airlift at former Tempelhof Airport in Berlin, Germany, May 12, 2019. REUTERS/Hannibal Hanschke 

Visitors look at an original Douglas C-54, so called "Rosinenbomber" (German for "Raisin bomber"), used at the Berlin Airlift, during a celebration to mark the 70th anniversary of the airlift at former Tempelhof Airport in Berlin, Germany, May 12, 2019. REUTERS/Hannibal Hanschke 

Visitors look at an original Douglas C-54, so called "Rosinenbomber" (German for "Raisin bomber"), used at the Berlin Airlift, during a celebration to mark the 70th anniversary of the airlift at former Tempelhof Airport in Berlin, Germany, May 12, 2019. REUTERS/Hannibal Hanschke 

Gail Halvorsen, Airlift veteran and Raisin Bomber pilot, arrives at a ceremony with Berlin's Major Michael Mueller (not pictured) for the 70th anniversary of the end of the Berlin Blockade, in Berlin, Germany, May 10, 2019. REUTERS/Annegret Hilse 

Gail Halvorsen, Airlift veteran and Raisin Bomber pilot, smiles during a ceremony with Berlin's Major Michael Mueller (not pictured) for the 70th anniversary of the end of the Berlin Blockade, in Berlin, Germany, May 10, 2019. REUTERS/Annegret Hilse 

Gail Halvorsen, Airlift veteran and Raisin Bomber pilot, smiles during a ceremony with Berlin's Major Michael Mueller (not pictured) for the 70th anniversary of the end of the Berlin Blockade, in Berlin, Germany, May 10, 2019. REUTERS/Annegret Hilse 

Gail Halvorsen, Airlift veteran and Raisin Bomber pilot, smiles during a ceremony with Berlin's Major Michael Mueller (not pictured) for the 70th anniversary of the end of the Berlin Blockade, in Berlin, Germany, May 10, 2019. REUTERS/Annegret Hilse 

Gail Halvorsen, Airlift veteran and Raisin Bomber pilot, smiles during a ceremony with Berlin's Major Michael Mueller for the 70th anniversary of the end of the Berlin Blockade, in Berlin, Germany, May 10, 2019. REUTERS/Annegret Hilse 

Berlin's Major Michael Mueller welcomes Gail Halvorsen, Airlift veteran and Raisin Bomber pilot, during the 70th anniversary of the end of the Berlin Blockade, in Berlin, Germany May 10, 2019. REUTERS/Annegret Hilse 

Berlin's Major Michael Mueller welcomes Gail Halvorsen, Airlift veteran and Raisin Bomber pilot, during the 70th anniversary of the end of the Berlin Blockade, in Berlin, Germany May 10, 2019. REUTERS/Annegret Hilse 

Raisins noisettes chocolates are displayed during the annual news conference of Swiss chocolatier Lindt & Spruengli in Kilchberg, Switzerland March 5, 2019. REUTERS/Arnd Wiegmann 

Students from St Andrews University are covered in foam as they take part in the traditional 'Raisin Weekend' in the Lower College Lawn, at St Andrews in Scotland, Britain October 22, 2018. REUTERS/Russell Cheyne TPX IMAGES OF THE DAY 

Students from St Andrews University are covered in foam as they take part in the traditional 'Raisin Weekend' in the Lower College Lawn, at St Andrews in Scotland, Britain October 22, 2018. REUTERS/Russell Cheyne 

Students from St Andrews University are covered in foam as they take part in the traditional 'Raisin Weekend' in the Lower College Lawn, at St Andrews in Scotland, Britain October 22, 2018. REUTERS/Russell Cheyne 

Students from St Andrews University are covered in foam as they take part in the traditional 'Raisin Weekend' in the Lower College Lawn, at St Andrews in Scotland, Britain October 22, 2018. REUTERS/Russell Cheyne 

Students from St Andrews University are covered in foam as they take part in the traditional 'Raisin Weekend' in the Lower College Lawn, at St Andrews in Scotland, Britain October 22, 2018. REUTERS/Russell Cheyne