Expiration & Storage Tips
When does pastry flour expire?
Unopened pastry flour can last up to two years past its 'Best By' date if stored properly. Once you’ve opened the package, the flour needs to be used within 6-8 months for best quality but it may be safe to use for up to a year if stored properly. Homemade pastry flour has a similar lifespan, while frozen pastry flour should ideally be used within a few weeks to maintain its best quality, but is safe to use indefinitely.
How do you tell if pastry flour is bad?
You can tell if pastry flour has gone bad by its smell and appearance. It may develop a rancid or sour smell, which is a clear indication that it has spoiled. Additionally, if you see any bugs, mold, or foreign particles, it's best to toss away the entire packet. These are signs of contamination and confer a risk to your health if consumed.
Tips for storing pastry flour to extend shelf life
• Keep the pastry flour in a cool, dry, dark place like a pantry or cabinet.
• Once opened, it's best to store the flour in an airtight container or resealable plastic bag to keep it from absorbing odors or moisture from the environment.
• If you plan to use the flour intermittently or if your kitchen tends to be humid, consider freezing the flour. Be sure to let it reach room temperature before using it in your recipes.
• Don't mix old and new flour together because this can spread any potential spoilage.