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Cov tshuaj tiv thaiv kab mob kub yog siab heev thaum lub tsheb kub, ze rau 100 degree. Thaum qhib, nws tuaj yeem txau cov kua thiab hlawv lub cev. Tsawg kawg, tom qab tus kiv cua nres ua haujlwm, hnav hnab looj tes kom tshem tawm lub hau ua ntej, thiab tsis txhob qhib nws ib zaug. Qhib nws tom qab venting chav.
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