1 cup sake
1/2 cup Chinese fermented black beans, rinsed and coarsely chopped (see Note)
1/4 cup soy sauce
1/4 cup hoisin sauce
3 tablespoons oyster sauce
2 tablespoons peanut oil
2 racks baby back ribs (about 4 1/2 pounds), cut into 2-rib sections
8 small dried red chiles
8 garlic cloves, halved
2 bunches scallions, cut into 1-inch lengths, plus thinly sliced scallions for garnish
Cilantro, for garnish