Would add only one comment about the cheese quality in pizzas, Empanadas and tostados. The cheese is like a piece of Rubber that makes you choke one piece in your mouth still connected to the other down your throat. Must cut pieces of the cheese to swallow it. Different mozzarella ??
This is true for what they call queso de maquina. But the cheese on McDonalds Hamburgers is no better.
I find that fast food, anywhere, has the cheapest ingredients, especially corporate fast food.
(buying blue corn Tlacoyos in Mexico City being a prominent exception to this rule, but you buy them from individual abuelas and their little shopping carts)
There are pizzas, empanadas, and tostados all around CABA which use better, more expensive cheese.
Guess what- they cost more.
The fugazeta at Bar Roma Abasto, for example, has both quality mozzarella and blue cheese, along with white, green, and red onions.
The same thing applies to empanadas and tostadas. There are good ones, with quality ingredients, and, they cost more.
I find the same thing happens in rural US towns- crappy ingredients, horrible food.
I once spent a week travelling across rural Utah, and every single food item had tons of white sugar in it- BBQ sauce, Chicken dishes, every salad dressing was sweet, vegetables had sugar sauces on them, and coke only came in giant plastic cups.
If you want quality ingredients, you have to go to quality places to eat.
This is true worldwide.