I've been given a bunch of quinces that MUST be used in the next day or two, but I have no canning jars and no way to get any before the fruit goes bad. If I make quince jelly and store it in tupperware (I have glass and plastic), will it be okay? I assume it won't last as long, but that's not a big deal. I think I remember my grandmother setting hers in shallow baking pans, but any advice is appreciated!
(Oh, and $10 off your order of $50 or more in the Food52 Shop, too.)