When you buy a jar of jam, how many sandwiches do you expect it to cover? How many sandwiches do you think it will cover if you’ve never thought about it? Do you have any idea? Do you even care? If you didn’t, maybe this would be a fun posts for your kids or kids you know if you didn’t have any. I’ve been curious all my life, but never took the time to search or find out. The answer is probably somewhere online, with variance as different jams, especially those with solid fruits, different jam spreading styles, among other factors, can influence the answers. But that’s why I went to do my own experiment to find out. And good thing, too, as it turned out, because a quick search revealed no such answers online!