Merluza en Salsa Verde
Steaks work best for this recipe, but you can substitute fillets with skin. Slowly cooking the fish over low heat while swirling the pot releases the gelatin in the skin and bones, which emulsifies the sauce.
Cooks' note:
Stock can be made 1 day ahead and cooled completely, uncovered, then chilled, covered. Reheat to warm before using.
*Available at spanishtable.com.