Hi,
I like to make a nastaart (pineapple jam filled cookies) and cooking the jam myself using fresh pineapples. Lately, I always make extra jam, so that we can use it for bread spread. However, my jam can only last around 2 days before it starts to molds.
How can I make it stays edible longer? I don't want to use non natural ingredients if that's possible. Basically, the jam uses lots of sugar, cinnamon powder, 3 dried cloves and two lemon leaves or sheared lemon skin.
Thank you