3 tostadas with pineapple salsa and Recipes

diced peeled pineapple, diced peeled jicama, diced red onion, chopped fresh cilantro, fresh lime juice, serrano chiles, seeded, chopped, olive oil, chili powder, zucchini , each cut lengthwise into 5 slices (about 10 oz), halibut or orange roughy fillets, corn tortillas

lime , zested and juiced, plus wedges for garnish, garlic, minced, extra-virgin olive oil, plus extra for baking sheet, kosher salt and freshly ground black pepper, white fish fillets, like tilapia, flounder, sole, skin discarded and cut into finger-sized pieces, vegetable oil, corn tortillas, sauteed white beans , recipe follows, shredded purple cabbage, pineapple and avocado salsa, recipe follows, sour cream, for garnish, extra-virgin olive oil, white or yellow onion, finely chopped, kosher salt, garlic, minced, ground cumin, white wine, cooked navy beans, chopped fresh oregano leaves (or 2 tsp dried ), freshly ground black pepper, sliced pineapple in juice, drained and juices reserved, lime juice, honey, extra-virgin olive oil, jalapeno , seeds removed and diced, kosher salt and freshly ground black pepper, red onion, finely chopped, avocado, halved, pitted and flesh cubed, minced cilantro leaves