Mrs H & I had a good crop of plums off our tree this ear so we decided to bottle the good ones in kilner jars. I went out and bought 4 x 3 litre kilner jars and got recipes/formulas on how to from a couple of cook books we have.
We made a light syrup and boiled for 5 mins or so (couldn't get the tmperature over 100 C as it was only a light syrup and didn't have enough sugar to do so).. Washed the plums and left them whole. Sterilised the jars, placed plums in jars and then covered with syrup. Seem simple enough, right? One of the jars Inoticed last night had a layer of bubbles on the top. On closer inspection we saw one of the plums giving off bubbles. I assume that this is the pum giving off CO2 (please correct me if I'm wrong). Why would this be happening if it is this?
2 of the jars had the syrup added when it had cooled sufficiently so as not to 'cook' the plums too much (the bubbing jar is one of these) andthe others hadthe syrup added just off the boil, so it would probably cook them a tad. We weren't sure if the syrup had to be added cool or hot so hence we did half and half to if that made any difference.
Doess this sound like we have done things right or should we have done it another way?