II Cov ntaub ntawv thiab cov yam ntxwv ntawm cov khob ntawv ice cream
A. Cov khoom siv khob dej khov nab kuab
Cov khob dej khov nab kuab yog ua los ntawm cov ntawv nyoos uas ntim khoom noj. Lub Hoobkas siv cov ntoo ntshiab tab sis tsis siv cov ntawv rov ua dua tshiab. Txhawm rau tiv thaiv kev xau, siv cov txheej txheej lossis kev kho txheej txheej. Cov khob uas muaj paraffin qib khoom noj rau sab hauv feem ntau tsis tshua muaj kev tiv taus cua sov. Nws qhov kub uas tiv taus cua sov yuav tsum tsis pub tshaj 40 ℃. Cov khob ntawv khov nab kuab tam sim no yog ua los ntawm cov ntawv txheej. Muab ib txheej yas zaj duab xis, feem ntau yog polyethylene (PE) zaj duab xis, rau ntawm daim ntawv. Nws muaj kev tiv taus dej zoo thiab kub siab. Nws qhov kub uas tiv taus cua sov yog 80 ℃. Cov khob ntawv khov nab kuab feem ntau siv ob txheej txheej. Qhov ntawd txhais tau tias muab ib txheej PE txheej rau sab hauv thiab sab nraud ntawm lub khob. Hom khob ntawv no muaj kev ruaj khov zoo dua thiab tiv taus kev nkag mus.
Qhov zoo ntawmkhob ntawv ice creamtuaj yeem cuam tshuam rau cov teeb meem kev nyab xeeb ntawm cov zaub mov ntawm tag nrho kev lag luam ice cream. Yog li, nws yog ib qho tseem ceeb uas yuav tsum xaiv cov khob ntawv ice cream los ntawm cov chaw tsim khoom muaj npe nrov rau kev ciaj sia.
B. Cov yam ntxwv ntawm cov khob dej khov nab kuab
Cov khob ntawv ua dej khov nab kuab yuav tsum muaj qee yam ntxwv ntawm kev tiv taus kev hloov pauv, tiv taus kub, tiv taus dej, thiab luam tawm tau. Qhov no ua kom ntseeg tau tias qhov zoo thiab saj ntawm dej khov nab kuab. Thiab qhov ntawd tuaj yeem muab kev paub zoo dua rau cov neeg siv khoom.
Ua ntej tshaj,Nws yuav tsum muaj kev tiv thaiv kev hloov pauv. Vim yog qhov kub qis ntawm cov dej khov nab kuab, nws yooj yim ua rau lub khob ntawv hloov pauv. Yog li, cov khob ntawv dej khov nab kuab yuav tsum muaj qee qhov kev tiv thaiv kev hloov pauv. Qhov no tuaj yeem tswj cov duab ntawm cov khob tsis hloov pauv.
Qhov thib ob, khob ntawv ice cream kuj yuav tsum muaj qhov kub thiab txias. Lub khob ntawv ice cream yuav tsum muaj qee qib ntawm qhov kub thiab txias. Thiab nws muaj peev xwm tiv taus qhov kub qis ntawm ice cream. Dhau li ntawm, thaum ua ice cream, nws tseem yog qhov tsim nyog los ncuav cov kua kub rau hauv khob ntawv. Yog li, nws kuj yuav tsum muaj qee qhov kub thiab txias.
Nws yog ib qho tseem ceeb uas cov khob ntawv ice cream muaj cov yam ntxwv tsis pub dej nkag. Vim tias cov dej khov nab kuab muaj cov dej noo ntau, cov khob ntawv yuav tsum muaj qee yam ntxwv tsis pub dej nkag. Thiab lawv yuav tsum tsis txhob qaug zog, tawg, lossis xau vim yog dej nqus.
Thaum kawg, nws yuav tsum tsim nyog rau kev luam ntawv. Cov khob ntawv khov nab kuab feem ntau yuav tsum tau luam tawm nrog cov ntaub ntawv. (Xws li lub cim lag luam, hom, thiab qhov chaw keeb kwm). Yog li ntawd, lawv kuj yuav tsum muaj cov yam ntxwv uas tsim nyog rau kev luam ntawv.
Yuav kom ua tau raws li cov yam ntxwv saum toj no, cov khob ntawv khov nab kuab feem ntau siv cov ntawv tshwj xeeb thiab cov ntaub ntawv txheej. Ntawm lawv, txheej sab nraud feem ntau yog ua los ntawm cov ntawv zoo, nrog cov qauv mos mos thiab muaj zog tiv taus kev hloov pauv. Txheej sab hauv yuav tsum ua los ntawm cov ntaub ntawv coated nrog cov neeg sawv cev tiv thaiv dej. Qhov no tuaj yeem ua tiav cov txiaj ntsig tiv thaiv dej thiab kuj muaj kev tiv thaiv kub zoo.
C. Kev sib piv ntawm cov khob ntawv ice cream thiab lwm cov thawv
Ua ntej tshaj plaws, qhov kev sib piv ntawm cov khob ntawv ice cream thiab lwm cov thawv.
1. Khob yas. Cov khob yas muaj zog tiv taus xeb thiab tsis yooj yim tawg. Tab sis muaj teeb meem ntawm cov khoom yas tsis tuaj yeem lwj. Qhov no tuaj yeem ua rau muaj kuab paug rau ib puag ncig. Tsis tas li ntawd, qhov tsos ntawm cov khob yas yog qhov tsis zoo nkauj thiab lawv qhov kev hloov kho tsis muaj zog. Qhov sib piv, cov khob ntawv zoo dua rau ib puag ncig, rov ua dua tshiab. Thiab lawv muaj qhov tsos hloov kho tau. Lawv tuaj yeem pab txhawb kev tshaj tawm hom thiab txhim kho kev paub ntawm cov neeg siv khoom.
2. Khob iav. Cov khob iav zoo dua hauv kev ntxhib thiab pob tshab, thiab hnyav dua, ua rau lawv tsis yooj yim tig, ua rau lawv tsim nyog dua rau cov sijhawm kim. Tab sis cov khob iav tsis yooj yim tawg thiab tsis haum rau cov xwm txheej nqa mus los xws li nqa mus tsev. Tsis tas li ntawd, tus nqi tsim khoom ntawm cov khob iav kim dua, uas tsis tuaj yeem ua tiav qhov ua tau zoo thiab kev tswj tus nqi ntawm cov khob ntawv.
3. Khob hlau. Cov khob hlau muaj qhov zoo heev hauv kev rwb thaiv tsev thiab tiv taus kev plam. Lawv tsim nyog rau kev ntim dej kub, dej txias, mis nyuj yogurt, thiab lwm yam.). Tab sis rau cov dej txias xws li ice cream, khob hlau tuaj yeem ua rau ice cream yaj sai dhau. Thiab nws tuaj yeem cuam tshuam rau kev paub ntawm cov neeg siv khoom. Ntxiv mus, tus nqi ntawm cov khob hlau siab, thiab cov txheej txheem tsim khoom nyuaj, ua rau lawv tsis haum rau kev tsim khoom loj.
Qhov thib ob, khob ntawv khov nab kuab muaj ntau yam zoo.
1. Lub khob ntawv sib dua thiab yooj yim nqa. Cov khob ntawv sib dua thiab yooj yim nqa piv rau cov khob iav thiab cov khob hlau. Lub khob ntawv sib dua ua rau cov neeg siv khoom txaus siab rau cov dej khov tshiab txhua lub sijhawm thiab txhua qhov chaw, tshwj xeeb tshaj yog rau cov xwm txheej. (Xws li kev nqa mus tsev, khoom noj ceev ceev, thiab cov khw muag khoom yooj yim.)
2. Kev ruaj khov ntawm ib puag ncig. Piv rau cov khob yas, cov khob ntawv zoo dua rau ib puag ncig vim tias lawv yog cov khoom siv rov ua dua tshiab uas tuaj yeem lwj tau raws li ntuj tsim thiab tsis ua rau muaj kuab paug ntau dhau rau ib puag ncig. Thoob ntiaj teb, kev txo cov kuab paug yas kuj tseem yog ib qho tseem ceeb zuj zus. Hais txog qhov sib piv, cov khob ntawv ua tau raws li qhov xav tau ntawm lub zej zog niaj hnub no rau kev tiv thaiv ib puag ncig thiab kev txhim kho kom ruaj khov.
3. Zoo nkauj thiab yooj yim luam tawm. Cov khob ntawv tuaj yeem hloov kho kom luam tawm tau raws li cov neeg siv khoom xav tau kev zoo nkauj thiab zam. Lub caij no, piv rau cov thawv ua los ntawm lwm cov ntaub ntawv, cov khob ntawv yooj yim dua rau kev tsim thiab ua. Tib lub sijhawm, cov tub lag luam tuaj yeem luam lawv lub logo thiab cov lus rau ntawm lub khob ntawv los pab txhawb kev tshaj tawm hom. Qhov no tsis yog tsuas yog txhim kho kev paub txog hom xwb, tab sis kuj tso cai rau cov neeg siv khoom nco qab lub hom thiab txhawb lawv txoj kev ntseeg siab.
Hauv kev xaus lus, cov khob ntawv ice cream yog lub teeb yuag, tus phooj ywg ib puag ncig, zoo nkauj, yooj yim rau kev hloov kho, thiab cov neeg siv khoom zoo.
