Mostly food
Good sushi
Real Mexican food
Sourdough English muffins
Dim sum, a real dim sum restaurant
Trader Joe's
Bacon
California style pizza
Canter's Deli / dill pickles
Centro Pet on Cordoba has birds seed. For finch and parrots. They also have hamster, rabbit and guinea pig food. Cages, bedding and accessories. Live animals and birds. I got my canary there.
Maple syrup- New Garden
Spices - El Gato Negro - huge variety of herbs and spices. I found Zatar there.
Nuts- Vitalcer - locations everywhere - yesterday I bought walnuts, almonds and pumpkin seeds. And ghee and pure peanut butter and hot sauce.
When I first came in 2006 , there was no blue. It was 3 to 1. A 100 peso note was worth 30$. There were few monedas as you needed exact change for the collectivo. Breaking a 100. peso note always included a sharp intake of breath.