Hard shell tacos became popular in the United States in the early 20th
century, particularly through Mexican-American cuisine. The
pre-fried, crispy taco shell was commercialized in the 1940s, with
fast-food chains like Taco Bell helping to popularize it nationwide.
While traditional Mexican tacos use soft corn tortillas, the hard shell
taco became a convenient, mass-produced variation that remains a staple
in Americanized Mexican food today.
Cook the beef: Heat a skillet over medium heat. Add olive oil if
needed. Add the chopped onion and cook for 2-3 minutes until softened.
Add the minced garlic and cook for another 30 seconds. Add the ground
beef and cook until browned, breaking it apart with a spatula.
Season the beef: Drain excess grease. Add the taco seasoning and 1/2
cup of water, and stir well to coat the beef. Simmer for 5 minutes
until the mixture thickens, then remove from heat.
Prepare the taco shells: heat taco shells in the oven for 1 minute.
Assemble the tacos: spoon beef into taco shells. Add preferred
toppings.