Mold often develops on jams and jellies that have been subjected to open kettle canning. If mold is visible, even just a small amount on the top layer of product, the entire jar should be discarded.

Weck jars aren't just for canning, and they're taking off on social media for making matcha, iced coffee, lemonade, and more.

Safe recipe sources include the Ball or Kerr websites, USDA, any university or cooperative extension website (which should end in .edu), the National Center for Home Food Preservation, or Healthy ...

For hot water bath canning, aspiring picklers can buy a canning pot ($146.99 at the Kitchen Engine) or use a large stock pot they have already. Clean glass jars are a must.