Didn’t the tea pot break later in that episode?
When I want more than one cup, I use an older version of this…
The ceramic is glazed and kiln fired, but it’s definitely developed a patina over time, both the stainless steel basket and the inside of the pot. There are cheaper brands, but I can’t speak to how they compare in quality as I’ve only owned the Forlife brand which I bought a couple decades ago in a tea shop for I think around 30-some USD.
At one point I had one of the glass tea infuser pots, but like my glass french press, it broke, and it never stayed warm, so it’s stainless steel and ceramic for me from now on.
I also use one of these outside or when it’s cold to keep the pot warm. Mine is red to match my tea pot, but it’s hard to find the non-white colored ones. You put little votive style candles in to warm the tea. I’d guess they also make electric ones.
Here’s a metal one…