Mix the dressing ingredients and season to taste with salt and freshly ground pepper - adding a little more lemon or honey if needed.
Cut the mango cheeks away from the stone, remove the skin and halve the pieces - then cut the mango crossways into thin slices.
Cut the apple into quarters and then into thin slices.
Put the pointed cabbage, mango, apple and spring onions in a bowl and toss well with the dressing. If you like, scatter a little extra spring onion over the top before serving.