I used a combination of several of Marisa's recipes. To make the jam set, I used a lemon, zest and juice, as well as 3 Tbsp. of powdered pectin. Still, my jam did not set very much. I guess I could have boiled it longer? Or added more pectin? Jam-making is still intimidating for me.
Marisa has very helpful ideas for jam that did not set). The flavor is great.