Next, add mustard, spices, tamari, liquid smoke, tomato paste, and water to the onion mixture and simmer for five minutes. After that, add the sauce to a blender and blend.
Cover the tray with foil and bake, covered, for 25 minutes. Then, remove the foil and bake for another five minutes. Once the bbq jackfruit is cooked, then mash with a potato masher.