How long can you safely use a pasta salad that is mixed with dressing and onions or any kind of meat used on bar at business?

According to the United States Department of Agriculture (USDA), pasta salad with perishable ingredients like meat, onions, and dressing should not be left out at room temperature for more than two hours. After this time, the salad should be discarded to avoid the risk of foodborne illness.

Perishable foods left out at room temperature are at risk of developing harmful bacteria, especially when those foods are high-protein foods such as meat and dairy. Symptoms of foodborne illness due to bacterial contamination can include fever, vomiting, diarrhea, and abdominal pain. It's important to take proper precautions when handling and storing food to avoid the potential health risks associated with perishable foods left unrefrigerated.