This can be made really easy if you have a food processor with a slicing attachment. If you do, just fire the cabbage and onions through the food processor. If you don’t have a luxurious blender, then use the coarse side on a box/cheese grater and some elbow grease!
Once all that work is done, in a large bowl mix the honey, white wine vinegar, lemon zest and juice, salt and Greek yoghurt.
Toss in the onion and cabbage and give it a really good mix using your hands. You can serve this immediately or it will keep, covered with cling film, for 3–4 days in your fridge.