What I did with them:
Step 1: Braise
In a slow cooker, put about 10 baby carrot sticks, half an onion sliced, six cloves garlic, two inches of ginger rough-chopped, quarter cup soy sauce, the same mirin, black pepper, and 2 lbs of the riblets. Cover with stock (I had a pint container labeled "pork chicken stock" in the freezer). I'd probably use less stock next time, it ended up with a lot of liquid. Slow cook alternating high and low for 5 hours to keep it at a simmer (I've never found a slow cooker that doesn't overboil on high, and or comes to a simmer at low).
Step 2: Reduce liquid
Remove the tender ribs, blend everything else with the boat motor to a smooth liquid. Add a half-cup brown sugar (I'd probably use less if I had less liquid), a half-teaspoon cayenne, large dash cumin, salt to taste, and boil down to a syrupy texture. Preheat broiler and put foil on a baking sheet.
Step 3: Coat and broil
Toss the ribs in the sauce, spread out on the pan and broil until dry-ish and browning.
Eat alongside a nice green salad with ginger dressing.
What is patriotism, but the love of good things we ate in our childhood?
-- Lin Yutang