01 - Heat 1 tbsp vegetable oil in a large skillet over medium heat. Add the finely chopped onion and cook for 3 minutes until softened. Add the minced garlic and cook for 1 minute until fragrant.
02 - Add the ground beef to the skillet, breaking it apart with a spoon. Cook for about 7 minutes until evenly browned and no pink remains.
03 - Stir in the chili powder, ground cumin, smoked paprika, dried oregano, cayenne pepper, salt, and black pepper. Cook for 1 minute until the spices are fragrant and well distributed.
04 - Add the tomato paste and mix thoroughly to coat the beef. Pour in the beef broth and simmer for 3 to 4 minutes, stirring occasionally, until most of the liquid is absorbed and the mixture is saucy but not watery. Remove from heat.
05 - Pour about 1 inch of vegetable oil into a deep skillet and heat over medium-high heat. Using tongs, carefully place each tortilla in the hot oil and fold it in half to form a taco shell. Fry for 1 to 2 minutes per side until crisp and golden. Drain on paper towels.
06 - Spoon the seasoned beef mixture into each crispy shell. Sprinkle shredded cheese over the warm filling so it melts.
07 - Garnish with shredded lettuce, diced tomato, sliced jalapeños, diced red onion, sour cream, fresh cilantro, and salsa to taste. Serve immediately with lime wedges on the side.