Rinse and Par-boil Rice: Rinse the basmati rice in several changes of cool water until the water runs clear. Bring a large pot of water to a rolling boil and season it generously with salt (it should taste like the sea). Add the rice and boil for 5 to 7 minutes, until the grains are soft on the outside but still have a firm bite in the center. Drain immediately in a fine-mesh colander and rinse with cool water to stop the cooking.

Prepare Saffron: While the rice cooks, use a mortar and pestle to grind the saffron threads with a small pinch of salt or sugar. Transfer the powder to a small bowl and add 3-4 tablespoons of hot water. Let it steep for at least 10 minutes.

Create the Tahdig Base: In a medium bowl, gently mix about 1.5 cups of the par-cooked rice with the yogurt, half of the melted butter, and about two-thirds of the bloomed saffron water.

Layer the Pot: Select a heavy-bottomed, non-stick pot or a well-seasoned Dutch oven. Add the oil and the remaining melted butter to the pot and swirl to coat the bottom. Heat over medium heat for a minute. Carefully spread the yogurt-rice mixture evenly across the bottom of the pot, pressing it down gently into a flat layer. This will become the crispy tahdig.

Add Rice and Vegetables: Gently mound the rest of the par-cooked rice on top of the base layer, forming a pyramid shape (this helps the rice steam evenly). As you add the rice, sprinkle in the diced red bell pepper and minced jalapeño in layers.

Steam: With the handle of a wooden spoon, poke 4-5 holes through the rice pyramid down to (but not stirring) the bottom layer. This allows steam to escape. Drizzle the remaining saffron water over the top of the rice. Wrap the pot’s lid in a clean kitchen towel (this absorbs condensation and prevents soggy rice) and cover the pot tightly.

Cook: Cook on medium heat for about 10 minutes, or until you can hear a gentle sizzle, which indicates the crust is setting. Reduce the heat to the lowest possible setting and let the rice steam for 35-45 minutes.

Serve: Remove the pot from the heat and let it rest, covered, for 5 minutes. To serve, place a large, flat platter over the top of the pot. Protecting your hands, firmly grasp both the platter and the pot handles and confidently invert them. If the crust has formed properly, the entire rice dish will release onto the platter with the golden tahdig on top. Garnish generously with the chopped fresh cilantro and serve immediately.