4 halibut fillets
2 Tablespoons olive oil

For mustard sauce:
2 Tablespoons whole grain gf mustard
4 Tablespoons créme fraiche or 1/2 cup whipped cream
Fresh ground pepper

For tomato sauce:
3-1/2 pounds ripe tomatoes, seeded
1/2 pound onion, chopped
1/2 pound carrots, chopped
2 celery stalks, chopped
1 Tablespoon fresh Italian parsley, chopped
1 Tablespoon fresh oregano, chopped
1 Tablespoon fresh basil, chopped
4 garlic cloves, peeled
2 whole cloves
Salt and freshly ground black pepper to taste