Imagine this ufffd it's your dream airbourne trip, Business Class et al. The lovely moment meets an unsavoury end when you are served a cold, bland and unappealing meal that has killed the mood. But all airline food needn't necessarily translate to a ticket to a culinary debacle in the skies. We go behind the scenes with four celebrity chefs who reveal the challenges, tricks and secrets to a sky-happy gourmet experience