Potting the jam up - the photo came out blurry because for some reason my camera decided that the teatowel in the background was a far more interesting subject matter than the jam in the foreground. Anyway, I was just trying to show the waxed disc on the top of the jam. You need to fill the jars as full as possible, and it's a good idea to have one more jar ready sterilised than you think you'll need, just in case.
One of the best ways to enjoy homemade jam - in a homemade scone with butter and a good cup of tea!!!
Hmmm, so I've kept saying that actually I didn't need to use that jam sugar with added pectin - this is why! I had a little excess jam which wouldn't fit into my jars, but wasn't enough to put in a new jar, so I just put it into a small bowl to eat later. It has set like a rock and has taken the shape of the bowl - you can't see that it isn't drooping over in the slightest but is standing erect and to attention. Ah well, it tastes great and that's all that really matters, but like I say, granulated sugar is probably all you need for this!!!