Just making marmalade (oranges arrive late up here!) as I do every year. Looking in my 'jam cupboard' I have found a few jars of marmalade from, I think, 2 years ago. They are very dark in colour, and as I like a pale marmalade, I know they have darkened in storage. They are still properly sealed, and my cupboard is dark and cool, they smell and, I think, taste ok. So, is this normal, and will they be OK to maybe cook with...I'm thinking steamed puddings. I have not had this before, but I don't usually have left overs. I think this happened when my Dad died and I no longer had to do his years supply.
Many thanks for any advice from the jam experts on here.