Does Salt Expire?
Pure salt does not expire and can last indefinitely when stored properly. Salt is a mineral and a natural preservative. However, salt products with additives like iodine or anti-caking agents may lose effectiveness over time, and flavored salts can degrade. Like salt, sugar and honey also last indefinitely.
Key Takeaways
- Salt (sodium chloride) is a stable mineral that does not support bacterial growth or decompose.
- Flavored salts or salt blends with herbs may have shorter shelf lives due to other ingredients.
- Sea salt and Himalayan salt follow the same rules as table salt for storage and shelf life.
Explanation
Salt (sodium chloride) is a stable mineral that does not support bacterial growth or decompose. Archaeological finds have uncovered salt that is thousands of years old and still chemically identical to fresh salt.
Iodized salt contains potassium iodide, which can oxidize and lose potency over about 5 years. The salt itself remains safe to eat, but the iodine content decreases. Anti-caking agents can also become less effective over time.
Store salt in a cool, dry place in an airtight container. Salt is hygroscopic, meaning it absorbs moisture from the air, which can cause clumping. Clumped salt is still safe to use; just break it apart.
Things to Know
- Flavored salts or salt blends with herbs may have shorter shelf lives due to other ingredients.
- Sea salt and Himalayan salt follow the same rules as table salt for storage and shelf life.
- If salt develops an off smell or color, discard it, as it may have absorbed contaminants.