It's been a Momofuku of a day. I used miso butter (just what it sounds: 1:1 ratio of each) on an english muffin topped by scrambled eggs with asparagus and mushrooms. Mmm, like an umami hollandaise. With the work below, that's three more recipes down. It's a great cookbook for understanding re-use, and using one prep for other things later. If all his pickles are as good as the kimchi cukes and the shiitakes (below), I'm in for a lot of sour, salty, low-fat snacks this winter.
I'm about halfway through making Momofuku's ramen broth. I had a chicken in the freezer that when I took it out was too freezer burned for roasting, but would be just fine in the stock pot. So I ran out to Meijer for neck bones (nice source for those, plus marrow bones, ox tail, shanks of all manner of beasts) and got started, probably too late in the day. It'll be done around midnight, longer if I want to 2X concentrate it.
So far:
1) Konbu. Evidently, konbu can mean a lot of things. The recipe calls for 2 3x6" sheets. Mine came out of the pouch in soft rags, and when rinsed turned into a gelatinous mass. Added good flavor, just a pain to get those sticky gooey shreds out of the pot after their 10 minute steep.
2) Shiitakes. Half an hour of simmering, and they come out (they were then pickled in soy sauce, sugar, sherry vinegar and ginger, per another recipe).
3) Chicken. An hour and a half (that bird was tougher than the hour they recommended), it's now been shredded and what wasn't too leathery will go into another meal later this week. What was too leather went into the dog.
4) Pork neck bones (roasted a little earlier) and bacon. Bacon came out after an hour, and was then fried up to top burgers. It gets very lacy and thin from partial rendering -- it also lost much of its smokiness and salt, but still provided a bit of crisp porkitude for the burgers.
5) Now I'm simmering away. More later.
[later]
6) Around 11PM, add scallions, carrots, onion
7) Around midnight, strain. Pulled a lot of relatively bland and mushy pork off the bones for dog treats. What else can you do with this stuff? Mock rilettes?

Brought it to a roaring boil with the lid on, turned off the fire, I'm going to sleep and hoping it's relatively sterile (Cathy's probably screaming "No, don't!").
I'll boil it more in the morning to reduce it for storage (frozen).