La Fondita Fish Tacos

Name: La Fondita Fish Tacos
Ingredients: 3 eggs, well beaten; 8 ounces dark beer (recommended: Modelo Negra); 2 teaspoons dry mustard (recommended: Colmans); 1 tablespoon red chili powder; Kosher salt; 1 teaspoon sugar; 1 1/2 cups all-purpose flour, plus extra for dredging; Vegetable oil, for frying; 1 1/2 pounds codfish, cut into serving pieces; 2 tablespoons olive oil; 8 white corn tortillas; Chipotle Mayonnaise, recipe follows; Shredded cabbage; 1 1/2 cups mayonnaise; 1 1/2 tablespoons fresh lime juice; 1 1/2 tablespoons chopped fresh cilantro leaves; 2 1/2 tablespoons chipotle chili puree; Pinch kosher salt