Peel and finely dice the shallots. Wash the salad again if necessary and drain well. Mix vinegar, half of the shallots, deep-frozen herbs, some salt, pepper and about 1/2 teaspoon sugar. Stir in the salad oil at the end
Wash the scallops and dab dry. Heat sunflower oil in a pan. Fry the scallops for 2-3 minutes while turning. Season with salt and pepper, remove from the pan and keep warm
Cut butter into cubes. Briefly sauté the remaining shallots in the frying pan. Add crémant, bring to the boil and simmer for about 1 minute. Gradually fold in the butter cubes at low heat or on the switched off hotplate. Season sauce with salt, pepper and 1 pinch of sugar. If necessary, heat the scallops briefly in the sauce
Mix salad and vinaigrette and arrange with the scallops on 4 plates. Spread the cream sauce on the scallops and serve immediately