Tostadas de Pescado (Fish Tostadas) | RICARDO

Ingredients

• 1 lb (450 g) haddock fillets
• ¼ cup (60 ml) store-bought salsa verde
• 1 red onion, thinly sliced
• 1 cup (250 ml) ice water
• ¼ cup (60 ml) lime juice
• ½ tsp salt
• 4 cups (220 g) thinly sliced iceberg lettuce
• 1 English cucumber, julienned
• 1 cup (30 g) chopped cilantro
• ½ Fresno pepper, seeded and thinly sliced
• ¼ cup (60 ml) olive oil
• 8 tostadas (see note)
• ½ cup (125 ml) sour cream