Yucatan Citrus Achiote Shrimp Tostadas with Cilantro Lime Black Bean Corn Relish

Ingredients

• 1 pound large shrimp (peeled and deveined)
• 2 tablespoons olive oil
• 1 tablespoon achiote paste
• 1 teaspoon ground cumin
• 1/2 teaspoon smoked paprika
• 1/4 teaspoon garlic powder
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper (freshly ground)
• 1 can black beans (rinsed and drained)
• 1 1/2 cups corn (fresh or thawed frozen)
• 1/4 cup red onion (finely diced)
• 1 jalapeño (small, seeded and minced)
• 1/4 cup fresh cilantro (chopped)
• 1 lime
• 8 tostada shells
• 1/2 cup light sour cream
• 1/4 cup cotija cheese (crumbled)