Discovered Superpolo a few years ago after realizing that if I wanted real Mexican food I had to…read morecook it myself. (Then I realized that if I wanted to cook it, first I had to learn how, but that's another story...)
So after some research I discovered there was a minimarket chain in town that had some Mexican products (mostly canned goods). I used to buy cans and cans of La Costeña sauces, beans and chipotle, sour cream (almost unknown in Italy), pricey avocados, etc.
I also discovered they have lots of foreign products like curries, american, oriental, arabic and mediterranean ingredients. Betty Crockers cake, muffins and pancakes mixes, Colman's products, jams, sushi rice, lots of spices, etc. But what people mostly come here for are the bio/natural products, from beauty stuff to gluten-free foods, fresh fruit and veggies, frozen specialties,etc.
Not giving it 5 stars because prices are a bit high (of course, it's one of the only places that has this variety so they charge you for that), and the last times I have been there I noticed they didn't have many Mexican ingredients left (no more salsa verde? c'mon, I can't be the only one who buys it!).
The shop has been under construction for some months, while it remained open for business, it was impossible to shop with the dust, noise and the smell of burnt iron, hopefully it's over by now and they have more space and more products!