Today's visit was to the Mercado Medellin.
Didn't know what everything actually was...anyway, bought some stuff like limes, chile poblano and jalapeño, tomatillos.
Also tried Horchata, some watery drink with cinnamon. No recommendation, though :-)
A stop of the Metro Bus, has its own lane and impressive stops, can serve up to 3 or 4 buses at the same time.