01 - Place a large skillet over medium heat. Add ground beef and cook for about 5 minutes, breaking it apart with a spatula until cooked through and browned. Drain excess fat if needed.
02 - Add finely chopped onion and minced garlic to the skillet. Cook for 2 to 3 minutes until softened and fragrant.
03 - Stir in tomato paste, ground cumin, chili powder, smoked paprika, dried oregano, salt, and black pepper. Cook for 1 minute, stirring to release flavors.
04 - Mix in diced tomato and 2 tablespoons water. Reduce heat to low and simmer for 5 minutes, stirring occasionally.
05 - Heat tortillas in a dry skillet or microwave until soft and pliable.
06 - Spoon beef mixture onto each tortilla. Layer with shredded lettuce, shredded cheese, sliced avocado, sour cream, salsa, cilantro, and jalapeño slices as desired.
07 - Present tacos immediately with lime wedges on the side for squeezing.