A seaside classic of potted shrimps in butter, the episode opens in the British Library with Polly. It's a potted history of potted shrimp! Jack looks at some of the very first recipes of a variety of potted ingredients from the 18th century. Back in his Cornwall kitchen, Jack uses only the best Morecambe Bay shrimps to make his potted shrimp, with particular care, as it's also his mother's favourite dish. Reprogramming his vocabulary, shrimps become prawns as Jack crosses half-way across the world to Darwin. An immediate blow to the plan, Simon Matthews, owner and chef of Pee Wee's Restaurant, alerts Jack to the fact he's arrived a month too early for prawn season...so they hatch a back-up plan of potted crocodile and crabs instead!