Rancid butter has a sour, pungent odor that is described as resembling ammonia or putrid cheese. It may also have a slightly sour taste. The smell and taste can vary depending on how long the butter has been exposed to air and how it has been stored.

How can you tell if butter is rancid?

You can tell if butter is rancid by its smell and taste. Rancid butter will have an unmistakable off-flavor and off-odor. You can also check the color of the butter. If it has a yellowish hue, it has likely gone bad. Additionally, rancid butter may have a slimy texture. Finally, if the butter has been in your refrigerator for longer than two weeks, it may be best to discard it just to be safe.

Does rancid butter smell bad?

Yes, rancid butter does smell bad. It usually has a strong, sour smell that can be quite unpleasant. Rancid butter can also taste sour and have an unpleasant, oily texture. It is important to store butter properly to prevent it from going rancid. If you notice a strange smell or taste when eating butter, it is best to discard it and purchase a new container.