I have had this happen once. Cold jar, didnt let the grease cool enough… was my bad. Same as if you’re going to put it into a metal can while its still really hot, make sure the can isnt sitting on something that will melt.
I think the best advice is “Dont pour the grease while its still hot enough to burn you”
I’ve been pouring hot grease in glass jars for decades without having one shatter. You’re severely overestimating the risks
I have had this happen once. Cold jar, didnt let the grease cool enough… was my bad. Same as if you’re going to put it into a metal can while its still really hot, make sure the can isnt sitting on something that will melt.
I think the best advice is “Dont pour the grease while its still hot enough to burn you”
I may be speaking from experience. I only pour grease into cans and foil now.