Heat a pan with oil over medium-high heat until it reaches the right temperature for frying.
The oil should be hot enough to sizzle when you dip in a piece of batter.
In a bowl, whisk together the flour, baking powder, and curry powder, blending everything smoothly.
These dry ingredients will add a subtle kick and structure to your batter.
Gradually pour the lager or beer into the dry mix, stirring gently.
The fizz from the beer will create a light, airy texture, crucial for that crispy finish.
Pat the fish fillets dry with a paper towel, then season them with a pinch of salt on both sides.
This step enhances the flavor and helps the batter adhere better.
Dredge the fish in the batter, ensuring each piece is evenly coated, then carefully lay them into the hot oil.
Fry until golden brown and crispy, typically about 3-4 minutes per side.