I definitely didn’t say to leave the pan on the hob for 20-30 minutes, it takes about 5 minutes. But if putting an empty pot or pan on the heat for 20-30 minutes ruins anything at all on your pans, you need better pans. Every single pan in my kitchen, and I have some budget ones, would just be too hot to handle for a while.
On the oil handling the heat, your way puts more heat into the oil than my way and you are way more likely to burn your oil.
I definitely didn’t say to leave the pan on the hob for 20-30 minutes, it takes about 5 minutes. But if putting an empty pot or pan on the heat for 20-30 minutes ruins anything at all on your pans, you need better pans. Every single pan in my kitchen, and I have some budget ones, would just be too hot to handle for a while. On the oil handling the heat, your way puts more heat into the oil than my way and you are way more likely to burn your oil.
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