Abstract: An apparatus and a method are provided for a controlled atmosphere display case for prolonged storage of plant-based contents within the case. The controlled atmosphere display case includes a rigid housing having an interior cavity. An inert gas supply provides an inert gas to the interior cavity. The inert gas may be nitrogen, or a combination of inert gases that includes nitrogen. An inlet valve conveys the inert gas into the interior cavity. A vacuum pump and the inert gas supply cooperate to create a nitrogen flush that replaces oxygen-rich air within the interior cavity with nitrogen gas. A pressure gauge actuator regulates the concentration of nitrogen gas within the interior cavity. A refrigeration unit controls temperature and moisture within the interior cavity. The nitrogen flush advantageously extends the shelf life of plant-based produce that may be stored within the interior cavity.