How Long Can Mayonnaise Unrefrigerated?
How Long Can Mayonnaise Unrefrigerated? Mayonnaise can sit at room temperature for up to 8 hours according to the USDA. any open mayonnaise jar that sits above 50° Fahrenheit for more than 8 hours needs to be tossed out. Can you eat mayonnaise not refrigerated? The perishable nature of mayonnaise is also why you should