In a similar vein, I hope you've seen the Primitive Technology channel on Youtube. https://www.youtube.com/channel/UCAL3JXZSzSm8AlZyD3nQdBA
Oh yes, I love that channel...it's like virtual meditation crossed with a really interesting lesson.
The clip you mention is at 21:50 in this episode, indeed the kitchen mixer episode:
"Therefore medieval England must have been full of cathedrals. It must have been amazing!"
I also strongly recommend the mini-motorcycle episode.