Green tomatoes in raspberry jelly? What a strange combination!

I should imagine there's little or no pectin in tomatoes, so could one add shredded apple? There's plenty of pectin in that.

And fancy freezing jam! My old auntie had shelf upon shelf of home-made jams, bottled fruit and chutney, and owned neither a fridge nor a freezer. I'd have thought the sugar preserves it for ages...