Oh yeah, the labour is long, and at the beginning after you blanch the trotters and have to wash and scrub them it is a lot of work. After it it just a matter waiting and watching as everything dissolves into almost nothingness. When you strain the brother the bones that are left are bleached out and super light having lost all the marrow and plenty of the mineral content.Holy labor (and CO2 emission) intensive HaHa. I had a rough idea of the ramen process from watching cooking YouTubes, but didn't appreciate the amount of time.
There was a great Sushi/Ramen place close to where I live but unfortunately didn't survive the pandemic. You're making me hungry, especially in this bleak cold weather.
Japan is on my bucket list.