Purée 24 g ginger to a smooth paste in a small blender and set aside. In a small cup, combine the saffron infusion with 5 g hot water or milk and let it steep.
Warm 216 g ghee or vegetable oil in a large, heavy pot over low heat. Add 1000 g lamb, 240 g plain yogurt, the prepared ginger paste, the stewing spices, and salt to taste. Cover and simmer for 10 minutes, stirring regularly to avoid scorching, until the moisture evaporates and a reddish residue begins to coat the pan base.
Pour in roughly 2 tablespoons of water, cover, and continue simmering over low heat, regularly scraping up the browned sediment and turning the meat. Repeat this moisten-and-scrape cycle over the course of about 30 minutes until the lamb turns a rich reddish-brown.
Add 4.2 g granulated sugar and 250 ml water. Cover the pot and simmer gently for 30 to 45 minutes, until the meat is completely tender.
Uncover and stir in the finishing spice along with the saffron infusion and its steeping liquid. Cover and cook for another 10 minutes, then increase the heat to medium and cook until the gravy reduces to a rich, clingy glaze.
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.
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.
Use 50% of the weight mixed with equal parts ground coriander and a pinch of ground cinnamon, ground cloves, and ground green cardamom. Sprinkle near the end for a warming finish.