Pressure and time. That’s all it takes. I followed u/ramen_lord‘s Pressure Cooker Tonkotsu recipe posted in the r/Ramen subreddit sidebar. It went pretty well. Here’s the rough rundown: Added 2 pigs feet and 4lb neck bones to pot Boiled for 10 minutes and skimmed Discarded water. washed bones. washed pot Added clean bones to clean…