Peel the celery and cut it into pieces. Peel and finely dice shallots. Melt the fat in a pot. Sauté shallots and celery for 2-3 minutes, add stock and cream. Cover and simmer for 30-35 minutes
Fry the bacon in a pan without fat until crisp. Take out, drain on kitchen paper, cut in half. Finely puree the soup, season to taste with salt and nutmeg
Wash the mussels and dab dry. Heat the oil in a pan. Fry the mussels for about 4 minutes, turning them over, and season with salt and pepper. Serve the soup in cups, place the scallops in the middle of each cup. Garnish with bacon. Puff pastry tastes good with it