Cod with White Wine Sauce

Name: Cod with White Wine Sauce
Ingredients: ½ cup all-purpose flour; ½ teaspoon salt; ¼ teaspoon ground white pepper; 1 ¼ pound cod fillets (4 fillets); 2 tablespoons sunflower oil; 1 shallot (finely chopped); ⅔ cup vegetable stock; ⅔ cup dry white wine; 1 teaspoon lemon juice (freshly squeezed); 1 teaspoon white wine vinegar; ⅛ teaspoon salt; ⅛ teaspoon pepper; ¼ teaspoon sugar; ¾ cup cream; 2 tablespoons butter (cold, in cubes of 1/2 x. 1/2 inch (1 x 1 cm)); 2 teaspoons fresh thyme (leaves only)