Putting warm food in the fridge

Question

Not sure if this question is appropriate for here, but I heard that putting really warm food in the fridge right after cooking it is not the right thing to do. It might cause bacterial growth? Is this true?

Answer

Two problems

1. Hot or warm food will briefly warm up food already in fridge, especially items immediately near it, and cycling temperatures doesn't not help fresh food quality or life

2. It is very power inefficient to do this, just let it cool on the bench until it reaches room temperature and then place it in the refrigerator

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