2 tablespoons salted black beans
1 1/2 pounds whole walleye, seabass or red snapper, well cleaned
1 teaspoon finely chopped fresh ginger
2 tablespoons vegetable oil
1 teaspoon minced garlic
1/2 teaspoon salt
1/4 teaspoon sugar
1 teaspoon soy sauce
1/4 teaspoon toasted sesame oil
2 green onions, with tops
1 teaspoon shredded fresh ginger