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We know we shouldn't, but most of us can't resist the temptation of a lolly. At the Allen's factory, Dr Karl steps onto the factory floor to see how Snakes Alive are made - spoiler alert, the most popular flavour is red.
Dr Karl visits the Kookaburra Sport cricket ball factory in Melbourne and learns how this global symbol of Australian sport is crafted from humble beginnings.
In this peep behind Bega's factory doors, Dr Karl learns how cheese is made... and it would appear that he knows more about String Theory, than he does string cheese. (Final)