8 6-inch corn tortillas
Canola oil cooking spray
1 6- to 7-ounce can boneless, skinless wild Alaskan salmon, drained
1 avocado, diced
2 tablespoons minced pickled jalapeños, plus 2 tablespoons pickling juice from the jar, divided
2 cups coleslaw mix or shredded cabbage
2 tablespoons chopped cilantro
1 15-ounce can black beans, rinsed
3 tablespoons reduced-fat sour cream
2 tablespoons prepared salsa
2 scallions, chopped
Lime wedges (optional)
Position racks in upper and lower thirds of the oven; preheat to 375°F.
Coat tortillas on both sides with cooking spray. Place on 2 baking sheets. Bake, turning once, until light brown, 12 to 14 minutes.
Combine salmon, avocado and jalapeños in a bowl. Combine cabbage, cilantro and the pickling juice in another bowl. Process black beans, sour cream, salsa and scallions in a food processor until smooth. Transfer to a microwave-safe bowl. Cover and microwave on High until hot, about 2 minutes.
To assemble tostadas, spread each tortilla with some bean mixture and some salmon mixture and top with the cabbage salad. Serve with lime wedges, if desired.
Using a vegetable peeler, remove zest from oranges in 1 1/2- to 2-inch-long pieces. Cut the pieces into very thin strips, about 1/8 inch wide. Cook in a small saucepan of boiling water for 5 minutes. Drain. Bring more water to a boil and cook the orange peel for another 5 minutes. Drain.
Bring sugar and 1/4 cup water to a simmer in a small saucepan, stirring until the sugar dissolves. Add the orange peel, cover and simmer for 3 minutes. Transfer the syrup and peel to a bowl. Cover and chill overnight.
Using a slotted spoon, transfer the orange peel to paper towels to drain before using.