3 seafood and tostada Recipes

flour tortillas, vegetable oil, unsalted butter, leeks, white and pale green parts, halved lengthwise and thinly sliced crosswise or 2 -3 scallions, both white & green parts, thinly sliced crosswise, shelled and deveined small shrimp (about 1/2 lb), sea scallops , cut into 1/2-inch pieces, lump crabmeat, salt, fresh ground pepper, crushed red pepper flakes (optional), dry white wine, minced parsley

vegetable oil, for brushing and frying, tilapia fillets, extra-virgin olive oil, seafood seasoning , such as old bay, dried ground cumin, dried oregano, corn tortillas, ripe avocado , flesh scooped out, low-fat sour cream, heavy whipping cream , plus more if needed, chopped fresh cilantro , plus more for garnish, chopped red onion, salt, mango, diced, raw sugar or brown sugar, special equipment : 3-inch round cutter