


What is this?
I water bath canned these jams in December before Christmas. Most people I gave the jams to ate them immediately. But for some reason my Raspberry batch has this weird darker jam collected at the top of the jar, and it smells a bit fermented. It tasted okay, but I did toss it anyways. Just wondering what this is or what I could do to avoid it. I did put extra lemon juice in the raspberry batch, but maybe there was contamination or not enough headspace.
I baked the jars to sterilize and boiled the lids. The hot jam went straight into the jars and then into the canning bath.
Whenever I looked this up all that comes up is pinholing, which I do see on the lid. First time canning, any advice appreciated! My strawberry jam and apple butter did not have this problem. But my friend opened her jam the other day and hers was the same, I kept one of the raspberries in the fridge and opened it tonight to see the same reaction I saw at her house.