Mezcal-Marinated Fajitas – Terrific Grilled Taco Series

Ingredients

• 2 canned chipotle chiles in adobo, smashed
• 4 garlic cloves, finely grated
• ½ cup fresh lime juice
• ½ cup mezcal
• ¼ cup of fish sauce
• ¼ cup fresh orange juice
• ¼ cup of soy sauce
• 2 teaspoons dried oregano, preferably Mexican
• 1 teaspoon cumin
• 1 teaspoon kosher salt, plus more
• 1½ pounds skirt steak
• 1 large white onion, halved, sliced ⅓ inch thick
• 6 tablespoons olive oil, divided
• Freshly ground black pepper
• 1 medium green bell pepper, ribs and seeds removed, sliced ⅓ inch thick
• 1 medium red bell pepper, ribs and seeds removed, sliced ⅓ inch thick