I dont use them for canning, sadly, as canning seems too daunting for my cooking skill level ATM... What I do use them for is drinking glasses, and I make cust

I dont use them for canning, sadly, as canning seems too daunting for my cooking skill level ATM... What I do use them for is drinking glasses, and I make custom leather sleeves for them and give them out as gifts. I buy Bamboo or Copper lids for them for aesthetics, but I personally just use them to drink from, or to transfer soups/stews (my favorite things to make) to friends and neighbors. I DO NOT belive they are safe for canning, as I had one shatter after going from hot to cold too quickly, so I do believe they are too thin to can in, sadly. But I am curious about the coating - hadnt heard that - and need to look into it. Thanks for the heads-up