the green market will be open on wednesday and saturday mornings, that is worth a trip. unfortunately we dont really have a lot of open air markets here, the million degree below weather and a mayor who prefers phony irish bars to all others are prime culprits.
If you are trying to get away from the usual suspects like blackbird, trotters, frontera, etc, there are a million second string restaurants that serve pretty good food. Arun's is haute thai, Heat serves live fish sliced tableside (Very expensive) and bombon on 22nd street is a good daytrip because the neighborhood there offers some killer mexican food. Chilpancingo has been regularly getting better guest reviews than topolobombo, for what it is worth i havent eaten at either. Katsu on peterson is mighty fine japanese food, not pretentious at all. Avec, down the street from blackbird, is absolutely solid. I cook at a restaurant/wine bar called Volo on the north side, i think the food and wine is **** good. the this-food-will-never-change-your-life-but-is-good category has some great ethnic restaurants, korean bbq, lithuanian food on the deep south side, polish food, mexican food, swedish food...there is a lot to eat here, its just a shame that we eat but a few times a day.
i'm pretty sure the chocolate exhibit at the museum is gone now, but there has been a huge amount of chocolate restaurants that have opened in recent years..ethels chocolate lounges are popping up all over the place, hot chocolate in bucktown is well known, and the aforementioned bombon has a loyal following. you probably visited sweet mandy b's in lincoln park, which is just as good as homemade (but not really much better) and you dont hvae to make it yourself. good luck weeding through the mess, there is a lot to choose from and i havent even scratched the surface.
edit: a couple of things i forgot. the fruit sushi place (frushi!) is called orange, and it is on clark street. The cinnemon roll place is probably ann sathers, go for the cinnemon rolls but save your appetite for ANYWHERE else in teh city. go to the ann sathers in andersonville, get the buns there, eat breakfast across the street at Svea, and then get desert at bonbon down the street. I would not miss maxwell street market on sunday AMs for the mexican tamales and gorditas, etc...but dont bring anything but your wallet, and keep an eye on that..i think they can smell tourists there. Sam's wine has a HUGE selection of wine, if you are into that. there are a number of good lunch specials on lincoln avenue around irving park, i prefer the ribeye at el llano but the half chicken at Pollo al Carbon is excellent too. so much food, so little time.