When I was at this awards ceremony for local businesses earlier in the year they had this young guy who'd set up what he claimed was the first company to make jam with grape juice, so I'm guessing the old-style of these jars means that either he was lying or this company are just good at marketing.
His stuff was called Super Jam (believe it or not!) and he won an international award for best young entrepreneur. The wee bastard was quite decent too - I wanted him to be an arrogant twerp so I could hate him... haha
super jam! i checked the site and didn't notice them making the same claim now about the grape juice - maybe he got rumbled ... fair play to him though, he's only 18!