Name The Year: Frits Zernike, inventor of phase-contrast microscope (Nobel 1953)?

Questions

What spice do chefs pay the most for?

What game invented by Sir John Suckling can you peg out in?

What country did Olympic marathon gold medallist Abebe Bikila represent?

What institutions race their boats from Putney to Mortlake on the Thames every year?

What Italian-born Australian boxer came out of retirement in 1979 to face Paul Ferreri?