On the real city tour of Cusco today, I had my first sip of real chicha. Most places in Peru serve chicha morada, which looks (and kinda tastes) like grape juice, and which has little or no alcohol content. Real chicha, on the other hand, can only be found in chicherias, and is much stronger in alcohol content. Tastes pretty good, and at the dodgy chicherias in the slums, it's only s/0.30 for a big cup's worth. But you don't want to drink too much of it, or you'll end up like the alcoholics that hang around there all day long.
Strong stuff, real chicha is.