Bangladeshi Beef Kala Bhuna with Luchi

In a large pot or Dutch oven, heat 1/4 cup mustard oil over medium-high heat. Add the sliced onions and sauté until deeply golden brown, about 10-12 minutes. Remove half of the fried onions and set aside for garnish.

Add the beef cubes to the pot with the remaining onions. Sear the beef on all sides until browned, about 8-10 minutes. Stir in the ginger-garlic paste, red chili powder, turmeric powder, cumin powder, coriander powder, garam masala, cardamom pods, cinnamon sticks, cloves, and 1 teaspoon salt. Cook for 5 minutes, stirring constantly, until fragrant.

Reduce heat to low, cover the pot, and simmer for 2.5 hours, stirring occasionally. The beef will release its own liquid and slowly darken. If the mixture becomes too dry, add 1/4 cup water at a time to prevent burning. The goal is a very dark, almost black, rich gravy.

While the beef simmers, prepare the Luchi dough. In a bowl, combine 2 cups all-purpose flour and 1/2 teaspoon salt. Gradually add 1/4 cup water, kneading until a smooth, pliable dough forms. Cover and let rest for 30 minutes.

After the beef has cooked for 2.5 hours, uncover the pot. Increase the heat to medium and continue to cook, stirring frequently, until the gravy is very thick and almost black, and the oil separates from the mixture, about 15-20 minutes. Stir in the remaining 1/4 cup mustard oil and the reserved fried onions. Cook for another 5 minutes.

Divide the Luchi dough into 12-15 small balls. Roll each ball into a thin, 4-inch diameter disc. Heat 2 cups vegetable oil in a deep pan over medium-high heat until it reaches 350°F/175°C. Fry the Luchi one at a time, pressing gently with a slotted spoon to puff them up, until golden brown on both sides, about 30-45 seconds per side. Remove and drain on paper towels.

Serve the hot Bangladeshi Beef Kala Bhuna immediately with the freshly fried Luchi.