Grating raw beetroot is easy because the beet is soft and doesn't take much effort. What is less pleasant is that the juice splashes and you end up dyeing at least one hand. Here is a simple trick to avoid the staining.
Preparing the vegetables: Peel and wash the raw beetroot and carrot, then grate them finely into a bowl. You can wear gloves while handling the beetroot, so you avoid ugly stained hands.
Adding the apple: Wash the apple, peel it if you like, cut it into thin slices and add it to the bowl with the grated vegetables. Mix everything together.
Seasoning and serving: Season with lemon, a few drops of oil and honey, and garnish the salad with chopped walnuts.