Clean and wash the zucchini, mushrooms and peppers. Cut the zucchini lengthwise into thin slices, e.g. with a peeler. Cut the mushrooms into pieces. Finely dice the bell peppers. Wash the thyme, remove the leaves
Heat the oil in a pan. Sauté the mushrooms in it while turning them. Add the diced peppers and fry for about 3 minutes
Squeeze the lemon. Deglaze vegetables with lemon juice, vinegar and approx. 2 tbsp. water. Boil everything up. Add zucchini and thyme and simmer for about 1 minute. Season to taste with salt, pepper and sugar
Lift out vegetables and mushrooms and arrange on plates. Drizzle marinade from the pan over them. Serve with baguette
Drink: cool rosé wine