It was actually my mother's bright idea to make mint jelly, well, her idea was to make mint sauce but I always preferred the jelly, myself. So, away to the internet, and bless the ABC in Tasmania, because here we are again - mint jelly.
I pretty closely followed the recipe in this one, hacked up the apples and boiled them in the vinegar. I used honey apple cider vinegar, since that's what I had in the cupboard. The apple didn't puree quite as nicely as I'd hoped, but it's actually ended up giving a bit of texture to the finished jelly so all's well. I upped the mint slightly, to maybe 6 tablespoons, and I added a few drops of green food colouring because the weird brown colour it turned offended my delicate sensibilities.