He definitely does not use an external mic. You can tell because of the reverb from his voice bouncing around the kitchen getting picked up on the camera’s internal mic. If he wore a lapel mic he wouldn’t have that problem!

But lapel mics cost money and they can be a pain to wear, especially when you’re cooking and need to keep your hands free without anything dangling into the food or the fire!

I've just watched over an hour of his videos, he's very good.

Apart from the good format I found myself thinking the audio is extremely good