On Moldy Jam
...be processed 10 minutes. Use of sterile jars is preferred, especially when fruits are low in pectin, since the added 5-minute process time may cause weak gels. One additional tip: remove the rings once you’re done canning. Jam that leaks out during processing can creep under the ring and go moldy. The rings are just for processing and transport. Once the jars are on the shelf you don’t need them. Initially, the restaurant in this scandal took to I...