Lub tshuab nqus tsev ntim khoom yog ib qho cuab yeej siv zoo thiab yog txoj hauv kev zoo rau kev khaws cov zaub mov, uas tuaj yeem pab kom tsis txhob muaj cov zaub mov pov tseg thiab lwj. Lub tshuab nqus tsev ntim cov khoom noj, qhov twg cov khoom noj yog nqus ntim rau hauv cov yas thiab tom qab ntawd ua rau hauv cov dej sov, kub tswj kom tau raws li qhov xav tau. Cov txheej txheem no yuav tsum tau tshem tawm cov pa oxygen ntawm lub ntim, raws li National Center for Home Food Preservation. Nws tuaj yeem tiv thaiv cov zaub mov tsis zoo rau saum huab cua uas tshwm sim los ntawm cov kab mob, thiab tseem ua rau lub neej txee ntawm cov zaub mov hauv pob.
Niaj hnub no muaj ntau lub tshuab nqus tsev ntim khoom noj nyob rau hauv khw, xws li nqaij, zaub, khoom qhuav, thiab lwm yam. Tab sis yog tias peb pom daim ntawv lo "nqus ntim" sau rau ntawm lub thawv ntim, ces "lub tshuab nqus tsev ntim" txhais li cas?
Raws li OldWays, cov kaus poom sau lub tshuab nqus tsev ntim khoom siv dej tsawg dua thiab ntim khoom, haum rau tib yam khoom noj hauv qhov chaw me me. Lub tshuab nqus tsev ntim tshuab no, tau tsim tawm hauv xyoo 1929, feem ntau yog siv rau cov pob kws hauv kaus poom, thiab nws tso cai rau cov neeg tsim khoom noj cov kaus poom kom haum cov khoom noj tib yam hauv ib pob me me, uas tuaj yeem pab lawv nqus cov pob kws hauv cov xuab moos kom khaws cov tsw. thiab crispness.
Raws li Britannica, tag nrho cov zaub mov hauv kaus poom muaj lub tshuab nqus tsev ib nrab, tab sis tsis yog txhua lub kaus poom xav tau lub tshuab nqus tsev, tsuas yog qee yam khoom ua tau. Cov ntsiab lus hauv cov thawv ntim khoom noj tau nthuav dav txij li thaum tshav kub thiab quab yuam tawm cov cua uas seem thaum cov txheej txheem canning, tom qab cov ntsiab lus txias, ces ib nrab lub tshuab nqus tsev tsim tawm hauv kev cog lus. Qhov no yog vim li cas peb thiaj hu nws lub tshuab nqus tsev ib nrab tab sis tsis yog lub tshuab nqus tsev ntim khoom, vim tias lub tshuab nqus tsev yuav tsum siv lub tshuab nqus tsev vacuum los ua nws.
Post lub sij hawm: Lub Xya hli ntuj-16-2022
