Refrigeration is the greatest invention in the history of food and drink

The Royal Society, a pre-eminent UK national academy of science classified refrigeration as the greatest invention in the history of food and drink in a project identifying the 20 most important inventions throughout human history.
The Royal Society, a pre-eminent UK national academy of science classified refrigeration as the greatest invention in the history of food and drink in a project identifying the 20 most important inventions throughout human history, according to four criteria: accessibility, productivity, aesthetics and health.

Health was obviously a crucial parameter as refrigeration is followed immediately on the list by two other food preservation techniques (i.e. pasteurization/sterilization and canning), just before the oven and irrigation.