Baja Fish Tacos

• 1 lbfish
• 1 cupall-purpose flour
• 1 cupbeer
• 1 tspbaking powder
• 1 tspsalt
• —freshly cracked black pepper
• 1 tspchile powder — optional
• 10–12corn tortillas
• 2–3limes
• 3–4 cupsfrying oil

For the Chipotle Crema:

• 1 cupmayonnaise
• 2chipotles in adobo
• 1 tbspadobo sauce
• 2garlic cloves
• —salt
• —lime

For the Curtido:

• ⅓ headgreen cabbage
• ¼onion
• ¼jalapeño
• ½ cupvinegar
• ¾ cupwater
• ½ tspMexican oregano — optional
• 1 tspsalt — kosher or sea salt recommended
• —freshly cracked black pepper