Expiration & Storage Tips
When does dry mustard expire?
Unopened, dry mustard will generally stay at best quality for about 3-4 years. If you've had it opened in your pantry for a while, don't worry - even after this time, it won't spoil and will remain safe to use. However, it may lose potency over time and not flavor your food as well. For homemade dry mustard, expect a shorter shelf life of about 1 year. Freezing is not a common way to store dry mustard, but if you do have it frozen for some reason, it can be kept indefinitely.
How do you tell if dry mustard is bad?
Just smell the dry mustard - this spice is off or bad when it no longer has strong and sharp fragrance, or any aroma at all. Another sign that dry mustard has been stored for too long is when it becomes hard and clumpy. However, remember this doesn't necessarily mean it's harmful, but it might not give your food that flavorful punch found in freshly grounded mustard seeds.
Tips for storing dry mustard to extend shelf life
• Store your dry mustard in a cool, dark, dry place. Under proper conditions, you can expect its best flavor within the first year but it'll hold onto its potency for three to four years.
• Keeping your mustard powder airtight is crucial. After every use, firm-press the lid back on, ensuring that as little air as possible gets in.
• The enemies of spice longevity are air, light, and heat. So, always use clean, dry spoons when measuring your dry mustard to avoid any moisture entering your container.