After a week of seeking out authentic Chilean food/experience all over Santiago Centro, I can…read morehonestly say that this place was my favourite.
This could quite possibly be because it's SO CHEAP (I love cheap stuff), but to be truthful the food was the tastiest Chilean fare I managed to try here in Santiago.
The location is tricky to find but its in the main food hall of La Vega and there are dozens of restaurants all located together in an open air, dingy space.
I recommend the cazuela de vacuno (a traditional dish, basically a stew with a chicken soup like broth, a large piece of slow cooked beef, a wedge of pumpkin and a potato stewed with some other vegetables). This came with a side starter salad and soup, all for the price of 2,500 CLP. I also tried the cazuela de ave (same thing but with a 1/4 chicken instead of the beef) on another occasion.