Yucatan Shrimp Fajitas

Ingredients

• 1-inch piece Mexican cinnamon stick (Ceylon cinnamon)
• 20 black peppercorns
• 4 allspice berries
• 1 tbsp cumin seeds
• 6 whole cloves
• 1/2 tsp salt
• 3 cloves garlic
• 1 tbsp dried Mexican oregano
• 1/4 pkg (3.5 oz pkg) achiote paste
• 1/2 cup Naranja Agria juice (sour orange juice)
• 6 Guerrero White Corn Tortillas
• 6 Guerrero Caseras Fajita Flour Tortillas
• 2 tbsp olive oil
• 1 large onion, sliced
• 1 red bell pepper, sliced
• 1 green bell pepper, sliced
• 1 orange bell pepper, sliced
• 1/2 tsp salt and pepper
• 1 1/2 lb peeled deveined shrimp, tail removed
• 2 tbsp finely chopped fresh cilantro