Is there any food as instantly mood-boosting and universally beloved as tacos? Since their invention in 19th century Mexico, tacos have become a cultural phenomenon popular for being convenient, inexpensive, and utterly delicious. People sport taco earrings, T-shirts, or purses and proudly celebrate Taco Tuesday. Tacos are essentially seasoned meat and toppings folded inside a tortilla but can be so much more.