Why does my jelly or jam not set?

Is the recipe you used a proven recipe? If so, than ask yourself, did I follow the instructions correctly? Most failures with proven recipes occur when we deviate from the cooking instructions or the amounts called for in the recipe. If the recipe is not a proven one, I would suggest either doing some research on your recipe or find a proven recipe that will work. Click on our Technical page and read the Recipe Building section for some general rules about building jam and jelly recipes.