Wrap well-washed beets in aluminum foil, put them on a baking sheet, and place them in an oven heated to 220°C degrees. Bake for about 1 hour. Check with a toothpick if it goes into the beetroot gently, it is ready.
Peel the baked beets and cut them into 1 cm thick cubes. Also cut a peeled apple (choose sour, "hard" apples).
Cut the washed and drained arugula into desired sizes by hand, place in a bowl and sprinkle with chopped beets and apples, sprinkle with walnuts.
Mix all the sauce ingredients and pour over the salad before serving.Bon Appetit!