Beer Batter Fish and Spicy Chips with Lemon-Habanero Tartar Sauce and Serrano Vinegar

Name: Beer Batter Fish and Spicy Chips with Lemon-Habanero Tartar Sauce and Serrano Vinegar
Prep time: 50 min
Cook time: 1 h 5 min
Total time: 1 h 55 min
Cuisine: American
Ingredients: 2 tablespoons kosher salt; 1 tablespoon ancho chili powder; 1 teaspoon chili de arbol powder; 4 large baking potatoes, like russets, about 3 pounds; Canola oil, for frying; Chopped cilantro leaves; Canola or Peanut oil; 2 cups all-purpose flour, plus 1 cup for dredging; Salt and freshly ground black pepper; 2 cups beer; 3 large egg whites, beaten to stiff peaks; 3 pounds cod or haddock, cut into 6-ounce pieces; Lemon-Habanero Tartar Sauce, recipe follows; Serrano Vinegar, recipe follows; 3 cups lemon juice; 1 1/2 cups prepared mayonnaise; 2 anchovy fillets, chopped; 1/2 habanero, chopped; 6 cornichon, finely diced; 2 tablespoons capers; Salt and freshly ground black pepper; 2 cups white wine vinegar; 8 serrano chiles, pricked with a fork; 1 tablespoon salt