When should you throw liqueur away?

You should consider throwing liqueur away if it shows signs of spoilage, such as an off smell, unusual color, or sediment formation. While many liqueurs have a long shelf life due to their high alcohol content and sugar, they can degrade in quality over time, especially if opened and not stored properly. If it has been opened for several years or stored in a warm environment, it's best to check for any changes before consuming. Always prioritize safety and quality when deciding whether to keep or discard liqueurs.