You are what you don’t eat

If asked to think about food preservation for a moment you might picture an aproned woman boiling oranges for marmalade in a large copper maslin pan; or vegetable scraps being turned into stock; or those recipes from wartime rationing using root veg in place of sugar; or even, with an eye to the modern, you might imagine a trendy chef preparing offal in a gleaming chrome kitchen to ensure the nose-to-tail credentials of his restaurant.

But there is more to the history of preservation...