How Do You Know If Grenadine Has Gone Bad?
Grenadine can go bad over time, and signs that it has gone bad include a change in color, a sour or off smell, and a change in taste. If the grenadine appears darker or cloudy, smells foul, or tastes bitter or sour, it is best to discard it and purchase a new bottle. It is important to store the grenadine in a cool, dry place and use it within a reasonable amount of time to ensure it remains fresh and enjoyable.