Nikad,
As for escones and cakes like biscochuelo, my family people do not like that my daughters and I start to eat just out of the oven. They suggest we have to wait cold, because get much more delicious but no a day off off course, maybe it will be one argentinian family and not for all.
In bakeries, thay sell good pasteries and breads, if they do not have enough products, I ask if its posible to put some a day off bread but saying sorry and give me discount.
In any case , as like Tangobob this is a kind of observation.
As for fruits and vegetables, for me very good, but if you want really fresh one
go to the Mercado Central near from Ezeiza. you have to buy too much for small number people but worth going if you have time and the transportation by which get there and with whom share...