Expiration & Storage Tips
When does unsalted butter expire?
Unsalted butter can typically stay fresh if it's kept in the refrigerator for up to about three months unopened. After it's opened, it's usually safe to use for a couple of weeks. If you freeze it, it can last up to 6 to 9 months. All these timeframes assume that you've been storing the butter properly and that the butter wasn't old when you bought it. Always check the expiration date on the packaging as well.
How do you tell if unsalted butter is bad?
Spoiled butter has a distinct sour or rancid smell. It might develop mold (black, pink, green, or yellow spots on the surface), or it may seem discolored with a darker yellow shade compared to fresh butter. You might also notice that the texture changes to a more brittle, crumbly state. If uncertain, a simple taste test can confirm whether it's off or not.
Tips for storing unsalted butter to extend shelf life
• Always store the butter in airtight containers or wraps to avoid absorbing flavors of other foods stored in the fridge.
• Unsalted butter is more prone to spoilage due to lack of preserving salt, so avoid leaving it out at room temperature for extended periods.
• For longer storage, freeze butter in its original packaging and put it inside a freezer bag to prevent freezer burn.
• Alternatively, chop into small portions, wrap them individually, and freeze. This way you can thaw just the quantity you need.
• Defrost butter in the fridge when you need to use it. Avoid microwave defrosting as it can unevenly melt the butter.