b) Only those potentially hazardous foods requiring limited preparation, such as hamburgers and frankfurters, that require seasoning and cooking shall be prepared or served. The preparation or service of other potentially hazardous foods, including pastries filled with cream or synthetic cream, custards, and similar products, and salads or sandwiches containing meat, poultry, eggs or fish is prohibited. This prohibition does not apply, however, to any potentially hazardous food that:

1. 1) has been prepared and packaged under conditions meeting the requirements of this Part;
2. 2) is obtained in individual servings;
3. 3) is stored at a temperature of 41°F or below, or at temperature of 140°F or above in facilities that meet the requirements of this Part; and
4. 4) is served directly in the unopened container in which it was packaged.