How Can You Tell If Vegetable Oil Is Bad?
Vegetable oil can go rancid after a certain period of time, and its chemical composition and flavor change as it interacts with air, light, and heat. The signs that vegetable oil has gone bad include a rancid or sour smell, a bitter taste, discoloration, and a cloudy or thicker consistency. It is best to discard vegetable oil if it shows any of these signs, as it may be harmful to health and negatively impact the taste of your food.