If you want to effectively preserve a baguette, you need to bake the baguette, let it cool naturally, then cut it into slices, wrap it in plastic wrap or muslin cloth, and put it in the refrigerator to freeze. Note that baguette bread should not be left in the air for a long time, as it will become harder and harder, affecting the taste.
To serve, combine with tomato sauce, cheese, condensed milk or sesame or peanut butter. Or cut the baguette into slices, wrapped lettuce, bacon and other ingredients, made into sandwiches. It can also be sliced thinly and served with red wine and caviar. Or you can make baguettes into stick pizzas and toasted baguette custard slices.