Chifukwa chakudya chophika chimakhala munjira yoziziritsira vacuum, njira yosinthira kutentha imayendetsedwa kuchokera pachimake chazakudya kupita pamwamba, kotero kuti mawonekedwe a malo odyetserako sadzawonongeka pakatentha kwambiri, ndipo chakudya chokhazikika chizikhala chatsopano komanso more chew.Pambuyo pa nthawi yomwe kuziziritsa kusanachitike kukufika pa kutentha komwe kumayikidwa kale, bokosi la vacuum la pre-oziziritsa limakankhidwa kuti lilowe munjira ina: kuyika vacuum.
Chophika chophikira cha vacuum pre-cooler ndi chida choyenera kuzizira chazakudya zophikidwa kwambiri (monga zopangidwa ndi braised, msuzi, soups) kuti ziziziziritsa mwachangu komanso mofanana, ndikuchotsa bwino mabakiteriya owopsa.