Stock cubes expire, but they last a long time if stored properly.

Stock cubes are blocks of concentrated seasoning, made with dehydrated vegetables, meat, and spices, compressed into cubes. They are usually beef or chicken flavored and are used to prepare stock, which is then used as a base for soups, stews, and sauces.

Although they may not be used often, they do expire, but they have a very long shelf life, which depends on the brand and how they are stored. They generally keep well for several years if stored correctly, and can often be used one to two years after the expiration date printed on the packaging.

Since dates aren't always reliable, it's a good idea to check the ice cubes. If they've changed color, smell bad or strange, or have softened or crumbled, they're spoiled and should be thrown away, regardless of the date. Expired cubes may taste worse and have less nutritional value, and are more likely to contain harmful bacteria if they weren't stored properly.

To preserve them longer, store them in a cool, dry place away from sunlight and heat sources. Humidity softens them and makes them lose flavor, so it's best to keep them in an airtight container or their original packaging, not in the freezer.

Homemade ice cubes last for several months in the refrigerator and up to a year in the freezer, but they lose flavor faster than store-bought ones because they're made with fresher ingredients. If you're worried about them spoiling before you use them, it's more practical to buy them at the store.