Looked him up and got this synopsis from nzb360.

Early 80s Chinese cooking show starring celebrity chef Martin Yan, airing on PBS station KQED. This is a US continuation of the Canadian syndicated series of the same name that ran from 1978 to 1982. The show features Chef Martin Yan as the presenter, and focused on Chinese-oriented cooking delivered with Chef Yan’s trademark humor and wit, filmed live before a studio audience who were presented the prepared dishes for sampling and commentary.

There’s a few episodes on YouTube as well. Not sure about PeerTube.

I didn’t see this part answered yet, but 4 °F is a very small ΔT. You’re not going to get much closer than that with passive cooling no matter what you do.

I will second citric acid.

We had a desktop ice maker with hard water and after about 3 months had issues with ice ejection. Well before then there was visible calcium build-up on the interior surfaces.

Smooth surfaces such as polished metal have fewer areas to harbor bacteria compared to the fibers of a wooden door, for instance. In addition, a flat surface is easier to clean than a round knob.

Another benefit is that some metals have a natural antibacterial property toward bacteria organisms on their surfaces.

Going to pop in with a vote for Kagi. They are paid, but they also run their own index so they don’t use Google at all. Well worth it.