De ce sa verificati termostatul? Supraincalzirea este unul din factorii principali care pot cauza scaderea performantei. Uleiul pentru prajit se descompune atunci cand este expus la aer la temperaturi ridicate. Astfel, uleiul devine mai inchis la culoare, dezvolta arome nespecifice si genereaza fum excesiv.
Caldura – desi necesara in orice operatiune de prajire – este in detrimentul performantei uleiului. Cu cat temperatura din friteuza este mai mare, cu atat mai repede se va deteriora uleiul, mai ales in timpul pauzelor de prajire. Reducerea temperaturii uleiului pana la 60-90°C in timpul pauzelor de prajire va ajuta la imbunatatirea profitului prin faptul ca se imbunatateste performanta uleiului si economisirea energiei. Prajirea la temperaturi prea scazute genereaza obtinerea unor alimente insuficient gatite, prea uleioase, neapetisante.
Termostatul poate fi inexact din cauza caldurii sau formarii unui film de polimeri. Fiecare friteuza trebuie inspectata periodic in special pentru verificarea exactitatii termostatului si termometrului. Se recomanda utilizarea unui termometru electronic, a carui acuratete trebuie si ea verificata periodic. Termometrele din sticla, cu mercur au un nivel ridicat de acuratete dar ar trebui evitate din cauza riscului de crapare.
Pentru a determina temperatura medie a termostatului, urmati pasii urmatori:
Prajiti toate alimentele la 180°C (cu exceptia acelor retete care prevad o anumita temperatura)
Este un fapt dovedit că atât calitatea alimentelor cât și durata de viață a uleiului sunt cele mai bune la o temperatură de 180 ° C.
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