Peel 1 clove of garlic and press it through a garlic press. Crumble the bay leaf. Coarsely crush juniper berries and peppercorns in a mortar. Mix spices and 2-3 tablespoons of oil.
Wash the meat, dab dry and brush with the seasoning oil. Cover and marinate for about 1 hour. In the meantime, wash and drain the zucchini, peppers, mushrooms and oyster mushrooms. Cut the zucchini, peppers and oyster mushrooms into bite-sized pieces and put them on skewers with the mushrooms.
Brush with remaining oil and season with salt and pepper. For the sauce, peel the remaining garlic and press it through a garlic press. Wash parsley, chives and dill, dab dry and chop.
Mix sour cream, yoghurt, garlic, herbs and horseradish. Season to taste with salt and pepper. Slightly remove the seasoning oil from the steaks. Season the steaks with salt and grill them on the preheated grill for 10-15 minutes.
Add the vegetable skewers a little later and fry while turning. Arrange the steaks and skewers with the sauce on plates and add a baked potato as desired.