Well am making more jam, and friends and family have been very kind with empty jars ,only problem is getting the sticky gum of the jars, even when the labels have come away, I tried scraping with a knife OH soon put a stop to that!
nail varnish remover! ,but I was rooting about under the sink found a pk of Brillo soap pads! I have no idea how long they have been there, anyhow thought I' d give it a go I had nothing to lose WOW!! IT WORKS!
the awful gum just came away with a few rubs only another 100 pots