In a large heavy bottom saucepan or a Dutch oven, combine chopped fruit, sugar and orange juice and vanilla bean (if using).
Cook on medium heat, stirring frequently until the fruit start to break down and the mixture is bubbling.
Cook till the fruit are cooked through and very soft, about 15~20 minutes.
At this stage, you can either blend the mixture with a hand mixer for a smoother jam or mash with a potato masher for a chunkier one.
If using ground vanilla, add it now and mix well.
Stir in pectin and mix very well.*
Simmer for 5-10 minutes or until jam thickens. Put a tiny bit on a cold plate and drag your finger through it. If it leaves a clean line - then it is ready. If not, simmer for another 5~10 minutes.
Store in a clean glass jar for up to 3 months in the fridge. It can stored in the freezer for up to 6 months.