Remove the jar rings and test the seals by trying to lift the lids with your finger or a knife. If the lid stays put, it has a good seal. Also, the lids should not flex up and down when pressed in the center. Reply
Remove the jar rings and test the seals by trying to lift the lids with your finger or a knife. If the lid stays put, it has a good seal. Also, the lids should not flex up and down when pressed in the center.