Miso Marinade : in a bowl mix the dark miso paste, brown sugar, cayenne, vinegar, Yuzu, sake and mix.
In a separate bowl mix: Grapefruit juice (save 1/2 cup) and zest, garlic, soy sauce, green onion
Mix Bowl 1 and Bowl 2, then add paste to ribs and more green onions (save about 1/2 cup of paste in separate bowl). Seal with plastic and refrigerate overnight.
Preheat oven at 300. Line a tray with foil, place ribs bone side down and oranges and onion under and around them. Brush ribs with more paste, add rest of grapefruit juice over ribs. Place 1 cup of water around ribs.
Cook for 2 hrs, in last 30 minutes brush more miso paste sauce and add more grapefruit juice. When done let cool before slicing,put a final brush of paste when slicing. Garnish with more sliced green onion.
