actually , if u wanna cook the fish soup . i think u must must use the pocket for boiling. since the food after 3 hours or more time and the matirial will be all being waste and seems like rubbish .... if u use the pocket , it will be cleanless andthe soup looks clear ...
i don't think the seam will be broken easiley since u can not also use in the same pocket over 10 times .... please notes that is unclean and not able to use so many time due to the deases will be grown-up.