I've mentioned this multiple times so I won't go into detail again, but when I worked at Taco Bell during high school, from 1985-87, every single item save olives, tortillas, and the sauces were made from fucking scratch. Literally 10 lb bags of ground beef that we'd brown and mix in sauce, refried beans that actually started as dry beans and got put into a pressure cooker, cheese that started as a giant block, lettuce that came as heads of lettuce, etc. And even the fucking olives came in a can as whole pitted olives, and we had to slice every goddamn one of them!
With everything coming pre-made in a bag now, the taste difference is so vast that I eventually have soured on going there much anymore, and it was without a doubt my favorite fast food ever. I've eaten thousands and thousands of enchiritos in my lifetime. If I ever win the lottery bigly, like the 1 billion currently up tonight, I might just buy a franchise with the agreement that I can source all of my own food myself, instead of the big giant Sysco truck, and start a revolution of "Throwback Taco Bells". I bet if it was in the right location, people would pay a bit more for the real shit once they tasted it. And I'd take lessons on hiring and treating my employees right from In 'n' Out and Chick Fil'a.