How to keep chocolate cake moist and fluffy | Kitchen aide

Our panel of cakey experts say oil, acidity and a slight underbake are all factors in attaining that optimum squishHow do I achieve a rich, moist, fluffy chocolate cake that Bruce Bogtrotter in Matilda would be proud of?Katie, London N17“The key to most fluffy cakes is the addition of oil,” says Phil Khoury, author of A New Way to Bake. That could come, he says, via replacing “up to 50%” of the butter in a recipe with neutral oil or substituting it entirely, the reason being that “oils are liquid at both fridge and room temperatures, whereas butter has to go above 25C for it to take on the attributes you associate with a moist cake”. Also, as butter starts to solidify, it has a drying effect on cakes, so having some oil in there will help soften things, Khoury adds.There is, of course, no butter involved in Khoury’s vegan take on the theme. “I use olive oil, but not a lot, especially when you’re in the business of not using eggs.” Typically, “you need quite a lot of fat to tenderise th