Qhov no yog ib tsab xov xwm qhuav heev, thiab nws yuav pab tau koj ntau tom qab nyeem nws!

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Vim li cas chocolate yuav tsum tau tempered?

Chocolate yog tsim los ntawm cov noob ntawm tsob ntoo cacao.Cocoa pods yog fermented, qhuav, thiab ci kom taum cocoa, uas muaj li ntawm 51% mus rau 55% rog, uas yog hu ua "cocoa butter".

Cocoa butter yog cov roj zoo heev.Nws yog tsim los ntawm ntau hom fatty acids, thiab nws qhov sib piv yog txawv ntawm lwm cov rog.Raws li pom nyob rau hauv daim duab hauv qab no, nws cov khoom rog index nkhaus yog piv nrog butter, butter thiab lwm yam rog.Nws ntxhab heev.Nws pib mos ntawm 28 degrees Celsius, thiab cov khoom siv sai sai hloov mus ua kua ntawm 33 degrees Celsius.

Vim li cas cov qhob noom xim kasfes tuaj yeem tawv thiab khov ntawm chav tsev kub, thiab nws yog crunchy thaum tom, tab sis nws melts hauv qhov ncauj?

Vim li cas cov qhob noom xim kasfes tuaj yeem tawv thiab khov ntawm chav tsev kub, thiab nws yog crunchy thaum tom, tab sis nws melts hauv qhov ncauj?

Nws yog qhov nqaim melting point ntawm cocoa butter uas nyob ze rau tib neeg lub cev kub uas ua rau saj ntawm chocolate.

Seamless kev twb kev txuas ntawm kub!Yuav ua li cas thiaj muaj kev xav tias lub hav zoov ntawm cov qhob noom xim kasfes kom txaus siab rau tib neeg lub siab rau zaub mov?

Tshwj xeeb, cocoa butter muaj ntau yam sib txawv ntawm cov khoom butter crystalline.

Feem ntau muaj 4 hom, xws li γ, α, β', β.Raws li qhov sib txawv ntawm qhov kub thiab txias, qhov hloov pauv siv lead ua tau pom hauv daim duab hauv qab no:

Lub melting point ntawm γ-hom siv lead ua yog 16 ~ 18 ℃, uas tsis ruaj khov heev, thiab nws yuav hloov mus rau α-hom nyob rau hauv li 3 vib nas this.Ignorable.

Cov qauv ntawm lwm yam peb siv lead ua muaj nyob rau hauv daim duab hauv qab no:

α-type crystals (hom I thiab II): melting point 17 ~ 23 ℃, nws yuav hloov mus ua β'-type crystal hauv ib teev ntawm chav tsev kub.Kev ntxhib los mos yog mos, yooj yim rau yaj.

β'-type crystals (hom III thiab IV): melting point 25 ~ 28 ℃, nws yuav hloov mus rau β-type crystal nyob rau lub hli tom ntej ntawm chav tsev kub.Kev ntxhib los mos yog tawv, tsis nkig, thiab yooj yim rau yaj.

Qhov ruaj khov tshaj plaws β-type crystals (V-hom thiab VI-type) muaj qhov melting point ntawm 33 ~ 36 ° C, nrog ib qho nyuaj thiab nkig zoo nkauj, thiab melting kub ze rau tib neeg lub cev kub.Txawm li cas los xij, qhov ruaj khov tshaj plaws VI crystal particles nrog qhov siab tshaj plaws melting point yog ntxhib thiab saj tsis zoo, thiab yuav ua rau muaj roj tawg rau ntawm qhov chaw (qhov no yog vim li cas ib txheej ntawm "hoarfrost" yuav tsim rau saum npoo ntawm chocolate tom qab lub sijhawm ntev. lub sijhawm), yog li nws yog ntau dua Metastable V-shaped crystals uas ruaj khov thiab muaj qhov ci ci tau dhau los ua cov qauv roj zoo tshaj plaws.

Lub hom phiaj ntawm kev hloov kho qhov kub thiab txias yog kom yaj cov qhob noom xim kasfes thiab kho qhov kub kom tau qhov zoo tshaj plaws homogeneous polymorphism, muab cov qhob noom xim kasfes crisp, silky saj thiab zoo nkauj ci zoo nkauj.

Rov qab mus rau plaub qhov kub uas tau hais los saum toj no, yog vim li cas qhov chaw txias thib ob ntawm iab chocolate mus txog 28 ° C?

Nws yog kom tsis txhob tsim ntawm lwm yam undesirable crystals nyob rau hauv cocoa butter, uas yuav cuam tshuam rau qhov zoo ntawm chocolate tiav.

Tsis tas li ntawd, cocoa muab tshuaj txhuam thiab qab zib hauv cov qhob noom xim kasfes tseem yuav muaj kev cuam tshuam rau cov txheej txheem crystallization, tab sis kuj hais lus, nws tsis zoo li qhov ntsuas kub, yog li kuv yuav tsis hais nws ntawm no rau lub sijhawm.

Yog li, yuav ua li cas kom txias txias los tsim V-shaped crystals?

Yuav hloov qhov kub thiab txias li cas?

Siv cov mis nyuj uas nrov tshaj plaws chocolate ua piv txwv:

KAUJ RUAM 1: Feem ntau, cov txheej txheem cua sov hauv dej yog siv los yaj cov qhob noom xim kasfes.Raws li pom nyob rau hauv daim duab hauv qab no, nws yog rhuab mus rau 40 ° C hauv dej.Lub sijhawm no, nws yuav tsum tau nplawm tas li, thiab ceev faj kom tsis txhob cia dej vapor nkag mus rau hauv chocolate.

STEP2: Muaj ntau txoj hauv kev kom txias, xws li dej txias, tablage, noob, thiab lwm yam.

Cov txheej txheem no yog kom txias cov qhob noom xim kasfes kom tsis txhob tsim cov VI crystals nrog cov khoom ntxhib thiab saj tsis zoo.

Siv cov feem ntau siv thiab zoo nkauj marble rooj txias txoj kev ua piv txwv.Ncuav ob feem peb ntawm cov qhob noom xim kasfes sib npaug rau ntawm lub rooj marble.

Siv lub spatula rov ua dua thiab txiav kom txog thaum lub chocolate ua tuab thiab pib lo rau ntawm spatula thiab tsis tuaj yeem ntws.Daim duab hauv qab no yog piv txwv.

Lub sijhawm no, qhov kub thiab txias yog li ntawm 25 ° C, thiab cov roj muaju zoo tau tsim.Nws yog ib qho tsim nyog yuav tsum txhuam tag nrho cov qhob noom xim kasfes ntawm lub rooj rov qab rau hauv lub lauj kaub qub tam sim ntawd, thiab qhov kub thiab txias yuav tsum tsis txhob txo qis kom tsim β'-type crystals lossis txawm tias α-type crystals.

Yog tias qhov ntsuas kub qis dhau lawm, qhov kub thiab txias yuav tsum tau hloov dua los ntawm thawj kauj ruam.

KAUJ RUAM 3: Rov ua dua.Qhwv tag nrho cov qhob noom xim kasfes ntawm lub rooj rov qab rau hauv lub lauj kaub qub thiab sib tov nrog cov qhob noom xim kasfes uas tsis tau txias.Qhov kub ntawm lub sijhawm no yog li 30 ° C.Yog tias cov qhob noom xim kasfes qis dhau 30 ° C rau cov kauj ruam tom ntej, nws tuaj yeem ua kom sov me ntsis rau 30 ° C hauv dej.

Cov kauj ruam no yuav tsum tau ceev faj, yog tias qhov kub thiab txias dhau lawm, cov roj muaju yuav yaj dua, thiab qhov kub thiab txias yuav tsum tau hloov dua los ntawm thawj kauj ruam.

Tom ntej no, cov qhob noom xim kasfes uas tau tempered tuaj yeem siv los txuas ntxiv txhaj tshuaj molding, dipping, thiab shaping cov haujlwm.

Tab sis tseem yuav tsum tau ua tib zoo saib xyuas, nws yog qhov zoo tshaj plaws los siv cov khoom txuag hluav taws xob los tswj qhov kub thiab txias, thaum qhov kub thiab txias heev, cov chocolate yuav tsum tau teem dua.

Yog li ntawd, chocolate yog qhov muag heev.Nws yog rhiab heev rau qhov kub thiab txias.Yog tias muaj kev tsis saib xyuas hauv cov txheej txheem ntsuas kub, nws yuav tsum tau rov pib dua, uas yog teeb meem heev.