Cook bacon until crisp, drain on paper towels and keep warm. Grill bread and brush with oil. Whisk saffron and water into mayonnaise to make a bright yellow sauce. On 2 large plates, arrange grilled bread. Cover one piece with bacon; on other piece of bread, arrange tomato and lettuce. Drizzle with mayonnaise and garnish with chopped parsley.
Yield: 2 servings