Portable: Yes
Cellulose acetate breaks down into microplastics that last for decades and find their way into the food chain
Implications of a Public Smoking Ban Canadian Journal of Public Health 99 (1), 62
In addition, Foods that contain sulfite preservatives such as sulfur dioxide, potassium bisulfite, or sodium metabisulfite
And on what seems to me the soundest basis: During much of his adolescence, and all his adult life, Seymour was drawn, first, to Chinese poetry, and then, as deeply, to Japanese poetry, and to both in ways that he was drawn to no other poetry in the world.* I have no quick way of knowing, of course, how familiar or unfamiliar my dear, if victimized, general reader is with Chinese or Japanese poetry
That level of control over flavor intensity is not something standard pouches offer