A flavor or nicotine pouch for adding flavoring and/or nicotine to electronic cigarette liquid, or “e-juice.” The pouch may include a polymer housing holding a liquid solution including a flavoring and/or a nicotine solution designed for adding a flavor and/or nicotine to an electronic cigarette juice, and a removable seal for accessing the liquid solution. The removable seal may be a tear tab, twist off cap, snap off cap, or the like that is removable to create an opening into an interior of the polymer housing where the liquid solution is contained. The removable seal, in some cases, may be operably re-connectable with the polymer housing to reseal the opening.