Clean, wash and roughly dice the aubergine, courgette and pepper. Peel the potatoes and also cut into cubes. Peel and chop onion and garlic. Heat olive oil in a pan, crumble the tartar into it and fry it vigorously.
Season with salt and pepper. Add potatoes, vegetables, onions and garlic, braise briefly, add stock and bring to the boil. Stir in herbs. Cover and cook over medium heat for about 10 minutes.
Season to taste with salt, pepper and cream and serve.