Tomatoes, Jalapeño, onion and cilantro, with spices. 𝗔𝗱𝗱𝗶𝘁𝗶𝗼𝗻𝗮𝗹 𝗶𝗻𝗳𝗼𝗿𝗺𝗮𝘁𝗶𝗼𝗻: Because of the acidity from lime and tomato, the Pico de Gallo can last for some time in the refrigerator. However, if acidity is felt below the tongue instead of the tip and sides, it should be discarded.