Boiled barley typically stays good in the refrigerator for 3 to 5 days if stored properly in an airtight container.
The shelf life of boiled barley depends on how well it's stored. After boiling, allow the barley to cool completely before transferring it to an airtight container. Cooling it down quickly helps prevent bacterial growth. Store the container in the refrigerator at a temperature below 40°F (4°C). Properly stored, boiled barley should remain safe to eat for 3 to 5 days. Look for signs of spoilage such as a sour smell, slimy texture, or visible mold. If you notice any of these, discard the barley immediately.
To extend the shelf life of your cooked barley, consider freezing it. Portion the cooled barley into freezer-safe bags or containers. When properly frozen, it can last for up to 2 months. Thaw it in the refrigerator overnight before using.