I just made an Italian pasta dish. As I was preparing to dispense the marinara sauce, I shook the jar to thoroughly mix the contents. This is a jar that I had opened previously and then returned capped to the refrigerator. Upon re-opening the jar moments ago, there was a large “pop!” and sauce was ejected everywhere. I’m glad I was wearing ratty clothes at the time because the shirt I was wearing will forever look it has blood-stains.
Is there some kind of gas build-up in tomato sauces?