Delicious?Um...not so much.
When in Peru, try one of the local delicacies: cuy. If it looks like guinea pig, that would be because it is. The skin is thick and rubbery; the meat is dark and gamey.
You may want to chase it down with another local favorite, chicha (a foamy alcoholic beverage made from fermented corn). Just make sure you have a pisco sour handy as a back-up.
Actually, if you really want something delicious: order soup. The soup in Peru is amazing.