Fish And Chips

Ingredients

• 2 pounds russet potatoes – peeled and cut into 0.5-inch-thick chips
• 2 quarts vegetable oil – for deep-frying
• 2.5 tsp kosher salt
• 1.5 pounds cod fillets – cut into 4 portions
• 0.5 cups all-purpose flour – for dredging
• 1.25 cups all-purpose flour – for batter
• 0.25 cups cornstarch
• 2 tsp baking powder
• 1 1/4 Cup beer (lager) – cold
• 2 tbsp cold water
• malt vinegar – for serving
• lemon – cut into wedges (for serving)

Instructions

1. Cut the russet potatoes into 0.5-inch-thick chips and soak in cold water to remove excess starch, 30 minutes.
2. Drain the potatoes and pat completely dry until no surface moisture remains, 2–3 minutes.
3. Pour the vegetable oil into a heavy pot (at least 6 quarts) to a depth of 2–3 inches and heat to 300°F over medium heat, 8–12 minutes.
4. Blanch-fry the potatoes in batches at 300°F until tender but still pale, 5–7 minutes per batch. Drain on a wire rack and let cool and steam off, 10 minutes.
5. Measure out the kosher salt (2.5 tsp). Use about 1 tsp for the batter, 0.5 tsp to season the fish, and 1 tsp to finish the chips after their second fry; keep this division in mind for later steps.
6. Pat the cod fillets dry, then lightly season all over with a portion of the reserved salt for the fish, 1 minute.
7. Put 0.5 cup all-purpose flour on a plate for dredging and coat the seasoned cod lightly, shaking off excess, 1–2 minutes.
8. In a mixing bowl, whisk together 1.25 cups all-purpose flour, the cornstarch, baking powder, and the batter portion of the reserved salt until evenly combined, 30–60 seconds.
9. Whisk in the cold beer until a smooth, pourable batter forms that thinly coats the back of a spoon, 30–60 seconds; if the batter seems too thick to ribbon from the whisk, whisk in up to 2 tbsp cold water to adjust.
10. Increase the oil to 375°F over medium-high heat, 5–8 minutes. Working one or two pieces at a time, dip the dredged cod into the batter, let excess drip, and lower into the 375°F oil; fry, turning once, until deep golden, crisp, and the fish flakes easily (internal 145°F), 4–6 minutes per batch. Drain on a rack; keep warm in a 200°F oven if needed.
11. Return the blanched chips to the 375°F oil and fry until golden and very crisp, 2–3 minutes. Drain on a rack and immediately season with the finishing portion of salt, tossing to distribute, 30 seconds.
12. Serve the hot fish and chips right away with malt vinegar and lemon wedges; the coating should stay shatteringly crisp and the chips fluffy inside.