Expiration & Storage Tips
When does agar expire?
Unopened agar in its dry form is shelf-stable, and can last indefinitely when stored properly. In general, it's recommended to use within 2-3 years for the best quality. Once agar has been dissolved and used in a recipe, the shelf-life depends on the other ingredients used. For instance, a jam made with agar will last up to one year, while a jelly or pudding might only last 1-2 weeks in the refrigerator, or 2-3 months in the freezer.
How do you tell if agar is bad?
Dry agar is quite hardy and does not spoil easily. However, if it develops an off smell, or shows signs of mold or bug infestation, it is best to discard it. If agar has been used in a recipe, the product itself will provide indications of spoilage - by developing mold, an off smell, changes in color, or changes in texture.
Tips for storing agar to extend shelf life
• Store dry agar in a cool, dark, and dry place like your pantry. A container with a tight seal is typically the best way to store agar to prevent moisture and bugs from getting in.
• Refrigerate dishes made with agar promptly. As a rule, do not leave them at room temperature for more than two hours.
• In the refrigerator, keep your dishes in airtight containers to protect their taste and texture.
• Agar-based dishes can be frozen, but they may lose some of their texture. When defrosting, do it slowly in the fridge to help minimize changes in texture.