If you don't refrigerate plain Greek yogurt before eating, it can spoil and become unsafe to consume. Greek yogurt, like all dairy products, is perishable and requires proper storage to maintain its quality and safety. Leaving it out at room temperature or in a warm environment allows harmful bacteria to multiply rapidly, which can lead to foodborne illnesses.
Here's what happens if you don't refrigerate Greek yogurt:
Bacterial growth: Bacteria thrive in warm and moist conditions, and they can multiply rapidly in yogurt left at room temperature. This can cause the yogurt to spoil, altering its taste, texture, and smell.
Sour taste: As the bacteria break down the sugars in the yogurt, it will start to taste sour or off, indicating that it has gone bad.
Foodborne illness risk: Consuming spoiled yogurt can lead to food poisoning or foodborne illnesses, causing symptoms such as nausea, vomiting, diarrhea, and stomach cramps. In severe cases, it may require medical attention.
To ensure the safety and quality of your Greek yogurt, it's essential to follow proper storage guidelines. Always refrigerate yogurt promptly after purchase or opening the container, and make sure to check the expiration date before consuming. When kept at the recommended temperature (usually between 32°F to 39°F or 0°C to 4°C), Greek yogurt can stay fresh and safe to eat for an extended period.