Expiration & Storage Tips
When does shiso leaf expire?
In the fridge, fresh shiso leaves typically last about one week, sometimes even up to 10 days, provided they're properly stored. If you notice the leaves wilting or losing their vibrant color, these are clear signs that they are past their prime, even if they're not technically expired yet. On the countertop, they usually dry out after 2 to 3 days. However, if you dry them correctly, they can be used as a seasoning and will last for months.
How do you tell if shiso leaf is bad?
Fresh shiso leaves ready for the trash bin will display clear signs of distress. Key things to look out for include slimy or wet texture, loss of green or red color (they turn more brown or yellowish), and an off-putting or moldy smell. If the leaves are dried, they'll get a rather stale and less pungent aroma when they're no longer good to use.
Tips for storing shiso leaf to extend shelf life
• Store fresh shiso leaves in the refrigerator. Wrap them in a paper towel before placing inside a loosely closed plastic bag to absorb excess moisture and prevent the growth of bacteria.
• Dry shiso leaves can be stored in a clean, airtight jar away from direct sunlight, moisture, and any heat sources. Don't worry, they don't lose much of their flavor when dried!
• Shiso leaves can also be pickled in a mixture of vinegar, salt and sugar. Stored in a sterilized jar, this method extends their shelf life to several months while simultaneously imparting a delightful sweet-tangy taste to the leaves.
• Another popular method in Japan is to preserve shiso leaves in salt. Layer salt and leaves in a jar, press down with a weight and let it sit. This technique can keep your leaves edible for up to a year but they do get quite salty - perfect for adding umami to your dishes!