Many processes designed to preserve food involve more than one food preservation method. Preserving fruit by turning it into jam, for example, involves boiling (to reduce the fruit's moisture content and to kill bacteria, etc.), sugaring (to prevent their re-growth) and sealing within an airtight jar (to prevent recontamination)
Njira zimene zinapangidwa zosungila chakudya zimakhudza njira zosungila chakudya zoposa imodzi. Kusunga zipatso popanga jamu, mwachitsanzo , kumakhala kuwilitsa kuti tichipetse madzi amene ali m’chipatsomo komanso kupha tizilombo, kuthila shuga kuteteza kukulaso komanso kutsekela mu botolo losalowa mphweya kuteteza kukhudzidwa ndi zinthu zowoletsa