When making their signature bakes - trifles - at the beginning of the episode Deborah accidentally used Howard's custard instead of her own, and not only did it ruffle feathers in the tent and cause a bit of a commotion, but it ushered in an entirely new era on the show. Custard-gate overtook the weather as the main topic of conversation in Britain that week, and I like to believe that it's heart-racing and deliciously tense episodes like this that elevated GBBO to BBC1 for the following series.
In amongst all the custard excitement at the start of the episode it's ridiculously easy to forget what on earth happened in the rest of it. The Technical Challenge was Mary Berry's Floating Islands, a "classy, dreamy dessert" that features quenelles of poached meringue floating on top of custard and decorated with a ball of spun sugar. Don't worry, I hadn't heard of them before the episode either.
Easy peasy? Not. At. All.