This was because cooking oil could easily deteriorate under the effects of light, heat, and air.
Especially in a high-temperature environment, it would accelerate the oxidation speed of oil, causing it to go bad and sour.
"Oh my..." Qian Caiyu put her hands together and faced the sky. "I think we put it by the window. The sun shone in every day, and it was hot for those days..."
"Yes, yes, yes." Xue Darong and the others all nodded.
Xue Yan looked at Jiang Yue, his eyes clearly trying to say that there were many more problems than this.
Jiang Yue agreed.
"After the oil is squeezed out, we must cover it for it to keep cold. Otherwise, it will also become sour." Jiang Yue said.
This was because if the lid was covered when the oil was being heated, it would be difficult for the heat to spread out. The oil would be in a hot environment for a long time, and the oil would naturally go bad.