Wash the meat and dab dry. Pluck rosemary needles from the stem and chop finely. Marinate meat with rosemary, except for 1 teaspoon, bay leaf and 3 tablespoons of oil for about 2 hours. Heat the remaining oil in a frying pan.
Brown the meat in it and continue to fry over medium heat, turning several times for 6-8 minutes. Season meat with salt and pepper and keep warm. Peel and finely dice the shallots and sauté in the cooking fat.
Add wine and stock, add the remaining rosemary and cook for 7 minutes. Knead 30 g butter and flour and thicken the sauce with it. Season to taste with salt and pepper. Clean and wash the zucchini and cut them lengthwise into thin slices.
Heat the remaining fat in a pot and sauté the zucchini in it. Add some water and steam for a few minutes. Season with salt and pepper. Cut the meat into slices and serve with sauce and vegetables.
Garnish with a slice of lemon and bouquet of herbs.