Homemade Elderberry Jam

"The main reason for making your homemade jam is to have control over the ingredients you are going to use, and thus, making the decision to prepare a more or less healthy jam. The jams that we usually buy in supermarkets, even in organic supermarkets, usually carry a large amount of sugars or sweeteners, as well as preservatives. Even the light versions that supposedly should be better for our health, are actually worse than the normal version because, instead of having refined sugar, they have artificial sweeteners. "