Place the 25 cm banana stem into a wide bowl, sprinkle over the stem seasoning and salt to taste, toss thoroughly, and leave to macerate for 1 hour.
Cover 200 g basmati rice with water, let soak for 10 to 15 minutes, then drain completely and lay across a wide tray to dry out.
Place 0.5 tablespoon raisins into a small bowl with 125 ml water and leave to plump.
Warm 13.5–27 g vegetable oil in a deep skillet over medium heat. Fry 600 g potato until nicely browned on all sides, roughly 7 to 8 minutes, then transfer out. Drain the soaked raisins, toss into the hot oil for 2 minutes, and set aside with the potatoes.
Pulverize 1.5 tablespoon poppy seeds using a mortar or grinder, then blend with the ground spice mix and 2 tablespoons water to make a wet paste.
Melt 100 g ghee in a large pot or kadhai over medium heat. Add the whole spices and sizzle for 2 to 3 minutes until fragrant. Add the poppy seed paste, cooking for 1 to 2 minutes until aromatic and slightly darkened, then tip in the drained basmati rice and stir-fry for 10 minutes.
Wring the liquid thoroughly from the marinated banana stem, crush and mash the pieces into shreds by hand, and stir into the rice. Add 500 ml water and salt to taste, put on the lid, and cook over medium heat for 15 minutes until the rice is nearly tender.
Fold in the cooked potatoes and raisins, lower the heat, cover, and steam gently for 3 to 5 minutes until the grains are fully tender. Moisten with up to 2 extra tablespoons ghee if dry, then take off the heat to serve.
Steep a tiny pinch (0.1 g per 2 g turmeric) in 2 tbsp warm water; use to match the rich golden hue. Contributes an aristocratic, honeyed floral flavour rather than earthy bitterness.
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 120% of the weight; melt gently over low heat to avoid burning the milk solids, which will yield a softer, creamier richness rather than a nutty aroma.
Use 1 g ground for 4 g whole (or 1 small pinch per 2 to 3 whole cloves). Add with spice powders; disperses intense warmth quickly, so use with restraint.
Allspice berries
Use 100% of the weight whole in tempering. Imparts a warm, clove-like aromatic profile combined with hints of nutmeg and cinnamon.
Use about a third of the weight (0.5 g ground for a 2.5 cm piece), stirred in with the ground spices rather than fried whole, since the powder burns quickly.