In this work. we will analyze the response of a Metal Oxide Gas Sensor (MOGS) array to a flow controlled stimulus generated in a pressure controlled canister produced by a homemade olfactometer to build an E-nose. The built E-nose is capable of chocolate identification between the 26 analyzed chocolate bar samples and four features recognition (chocolate type. extra ingredient. https://www.ealisboa.com/amazing-price-Calystegia-macrostegia-Anacapa-Pink-Anacapa-Pink-Island-Morning-Glory-Plant-hot-choice/