Are you brave enough to try this dish? Maybe when pigs fry. New York City epicures are devouring a “special” Ecuadorian delicacy, guinea pigs — better known stateside as a potential pet for kids — and hailing them as a “very delicious” feast. At least that is the experience at the restaurant La Casa Del Cuy — literally “the house of guinea pig” — a culinary go-to in Corona, Queens, that grills and serves the rodent (cuy) whole, essentially every part but the “squeak.” On a recent Monday evening, the house was packed with diners tearing into the 2½-pound animals,...