Malaysian Airlines (part of the Oneworld alliance) have a signature dish, Satay, which is served in their First (Business Suite) and Business Class cabins. This has been a tradition for many years and the airline pride themselves on the popularity of the dish which obviously comes with a bowl of super rich peanut butter sauce. I am quietly confident that if any passenger told the airline they had a peanut allergy the airline would not be offering to stop serving their signature dish.