Kev sau, lossis kev tawv nqaij tawv, yog cov haujlwm txheej thaum ub. Tau ntev, tus txiv neej tau siv tawv tsiaj ntawm plob hav zoov tua tsiaj los tsim ua khaub ncaws. Txhawm rau kom tawv nqaij los ua lub tsho tiv no zoo nkauj, lub kaus mom lossis lub tsho, siv ntau yam ua haujlwm ntawm nws.
Tsim nyog
Cov tais cov iav lossis khob iav, ntxhib riav lossis oat hmoov, rooj ntsev, dej qab zib, poov xab, chrome alum, ntxuav hmoov
Cov Lus Qhia
Kauj ruam 1
Muab cov tawv nqaij tso rau hauv txoj kev tshiab tshiab tso rau hauv lub tank thiab sau nrog dej. Soak, hloov cov dej ob zaug hauv ib hnub thiab zuaj tawm rau ob peb hnub. Yog li ntawd, daim tawv yuav tsum zoo li ib daim tshiab. Yog li ntawd, thaum so, cov tawv nqaij nyob rau tib lub sijhawm ntxuav tawm, ntxiv ntxuav hmoov rau hauv dej.
Kauj ruam 2
Cov theem tom qab tom qab soaking yog fleshing. Ncab cov tawv nqaij dua lub cav nrog lub pluab sab hauv, lossis kis tawm yog tias nws loj. Siv ib rab riam txhawm, lossis sab nraub qaum ntawm tus hniav txhav, lossis hlau txhuam kom maj mam txhuam cov roj, nqaij thiab zaj duab xis ntawm tus Tsov tus tw mus rau lub taub hau thiab sab nraub qaum mus rau lub plab.
Kauj ruam 3
Txuag qhov chaw nkaum los ntawm yaug nws dua nyob rau hauv kev daws lub xab npum, tshuaj zawv plaub hau, los yog xab npum ntxuav, qhov twg koj tau tu. Cia kom tag nrho cov dej ntws tawm thiab so ntawm sab hauv ntawm daim tawv nqaij nrog daim ntaub huv thiab qhuav kom tshem tawm cov dej noo ntau dhau.
Kauj ruam 4
Cov kauj ruam tom ntej yog fermentation. Nyob rau hauv ib lub hnab looj lossis khob ntim, npaj cov khoom hauv qab no: hauv 1 litre ntawm dej kub, do 200 g ntawm coarse rye lossis oat hmoov nplej, ntxiv 7 g ntawm poov xab, 25 g ntawm sodium chloride thiab 0.5 g ntawm dej qab zib rau lub chatter box Cov. Rau 1 kg ntawm tawv, 3 kg ntawm no jelly yog xav tau.
Kauj ruam 5
Hauv cov khoom tov txias, muab cov tawv nqaij tawv nrog rau daim tawv nqaij sab nraud. Cov txheej txheem ntev heev, tab sis nws yog ib qho tseem ceeb kom tsis txhob ua kom dhau, vim tias qhov no tuaj yeem ua rau cov plaub hau hle. Hloov cov tawv nqaij txij ua ke mus ua ke. Tom qab 2-3 hnub, lub paj dawb yuav tsum tshwm saum npoo ntawm cov nqaij thiab qhov kev daws teeb meem yuav tau cov mov tsis ntev. Tus txheej txheem dhau lawm. Tshem tawm, cia cov tshuaj ntws tawm thiab pib tanning.
Kauj Ruam 6
Tso 7 g ntawm chrome alum thiab 55-60 g ntawm lub rooj ntsev rau 1 liter dej. Qho qee zaus, tsau cov tawv nqaij hauv qhov kev daws rau 12 rau 24 teev. Rau 1 kg ntawm tawv, yuav tsum muaj 3 liv ntawm chrome tanning tus neeg sawv cev.
Kauj Ruam 7
Npaj willow bark thiab twigs me me. Sau ib lub tais nrog lawv yam tsis tau tamping thiab hau li 30 feeb. Tom qab ntawd muab cov dej daws, ntxiv 50 g ntawm lub rooj ntsev rau 1 liter dej thiab txias. Qhov no yog tannin tanning. Cov tawv nqaij tuaj yeem nyob hauv nws los ntawm 12 teev mus rau 4 hnub kom txog thaum daim tawv nqaij noo tag. Tom qab tanning, muab daim tawv tso rau hauv qab ceev rau ripening rau ob hnub.
Kauj ruam 8
Ua kom cov tawv nqaij mos, ntxiv dag zog rau nws lub zog thiab elasticity, nyob ntawm cov nqaij nrog qee yam ntawm dej-rog emulsion. Tom qab fattening, tawm ntawm daim tawv nqaij kom pw li 3-4 teev. Tsis tas cia daim tawv nqaij kom huv si, zuaj, ncab nws sib txawv. Tom qab ntawd txhuam cov nqaij nrog chalk thiab lwv nrog ntom ntaws. Nws tseem nyob los muab cov hom kev lag luam - khob tawm ntawm daim tawv nqaij thiab zuag.
