For the best results, prepare this slaw slightly ahead of time and chill in the fridge for an hour or so before serving. You could also prepare the veg and dressing elements separately then mix them together an hour or so before serving. If left for too long in the dressing, the veg will start to soften and lose its crunch. It'll still taste great, but I find that the sweet spot is anywhere from 30 minutes to 2 hours.