Bring a large pot of salted water to a rolling boil. Add 1000 g jackfruit and simmer for around 30 minutes, until tender.
Drain the cooked jackfruit thoroughly and arrange the pieces on a clean tea towel or muslin. Leave undisturbed to air-dry for 5 to 6 hours.
Place 250 g jaggery and 254 g white malt vinegar into a saucepan. Bring to a boil and cook for roughly 5 minutes until the jaggery has completely dissolved into a syrup.
Strain the hot liquid through a fine sieve into a heatproof bowl. Season with salt to taste and incorporate the pickling spices.
Add the dried jackfruit to the bowl, toss well to coat every piece evenly in the spiced syrup, and pack into sterilised jars.
Use 80% of the weight. Granulated sugar is sweeter by weight, but gives a cleaner, one-dimensional sweetness that lacks jaggery's caramel, molasses depth.
Soak and blend into a paste; use 100% to 120% of the weight. Adds rich, natural, fruity sweetness with complex, dark molasses notes that thicken the gravy.
Use 50% of the weight and stir in near the end of cooking. Adds warmth and depth since it contains ground coriander, but introduces stronger spices like clove and cinnamon.
Use 300% to 400% of the weight (e.g. 3–4 g paste for 1 g ground). Fry in oil alongside onions; provides a juicy, pungent kick rather than a dry, baking-spice heat.
Peel and grate finely; use 300% to 400% of the weight. Add to the hot oil early; delivers bright, peppery warmth rather than the mellow, woody heat of dry ginger.