The BBC says a “scientific genius” whose work shaped Britain’s World War Two food rationing is being honoured with a blue plaque.
Elsie Widdowson and her colleague Robert McCance showed it was “possible to live on a very simple diet” of bread, vegetables and potatoes.
Food rationing began in early 1940. It gave each person a scientifically-devised weekly allocation of food.
The plaque is being unveiled at a former bakery near Dr Widdowson’s home in Barrington near Cambridge.
When war broke out in 1939, Dr Widdowson and Dr McCance felt they must do something to further the war effort, according to her biographer Margaret Ashwell.
One of the most important things they advised on was the need to add calcium – in the form of powered chalk – to bread.