To make the curry sauce, add 2 tablespoons vegetable oil into a small saucepan and fry the ½ onion over medium heat until they are soft. Add the 2 tablespoons fresh ginger and 3 cloves garlic and continue frying until they are very fragrant and browned all the way through. Add the 1 tablespoon curry powder, ⅓ teaspoon ground coriander seed, and 1 teaspoon all-purpose flour and fry until saturated with oil and fragrant. Add the 2 tablespoons ketchup and ¾ cups low sodium chicken stock then whisk, cooking until the sauce thickens up just a bit.
2 tablespoons vegetable oil, ½ onion, 3 cloves garlic, 2 tablespoons fresh ginger, 1 tablespoon curry powder, ⅓ teaspoon ground coriander seed, 1 teaspoon all-purpose flour, 2 tablespoons ketchup, ¾ cups low sodium chicken stock
To fry the chips the first time, add about ¾" of vegetable oil to a heavy bottomed pan (cast iron ones work great), and heat over medium heat until it reaches 325 degrees F. Carefully lower some pieces of the 2 large russet potatoes into the oil without overcrowding the pan. Fry until they are limp but not brown. Transfer to a paper towel lined plate and fry the rest of the potatoes.
vegetable oil, 2 large russet potatoes
To make the beer battered fish, mix the 1 cup all-purpose flour, ¼ cups cornstarch, ½ teaspoon paprika, ½ teaspoon onion powder, salt and black pepper in a bowl. Put about ½ cup of the mixture into a shallow pan or bowl and dust the 1 pound cod with the mixture.
1 cup all-purpose flour, ¼ cups cornstarch, ½ teaspoon paprika, ½ teaspoon onion powder, salt, black pepper, 1 pound cod
When the chips are done, raise the temperature of the oil to 375 degees F. Add ¾ teaspoon baking powder to the unused flour mixture in the bowl then add about 1 cup beer. Gently stir until just combined (it's okay if there are still a few lumps), and add more beer if the mixture seems too thick (should be like thick pancake batter). Dip the cod in the batter, coating and allowing any excess to drip off and place in the hot oil.
¾ teaspoon baking powder, 1 cup beer
Fry until golden brown on one side then flip and fry until golden brown on the second side. Transfer to paper towel lined wire rack and repeat until all the cod is fried. Sprinkle with sea salt.
To finish frying the chips, add a handful of potatoes into the hot oil and fry until crisp and golden brown. Repeat until all the chips are fried. Sprinkle with sea salt.
Plate a mound of fries, top with a piece of fried cod and serve with curry sauce and a wedge of lemon or malt vinegar.