Fish finger hot dogs

Name: Fish finger hot dogs
Prep time: 30 min
Cook time: 15 min
Total time: 45 min
Cuisine: American
Ingredients: 300-400g skinless and boneless pollock or cod, cut into 4 chunky fish fingers; 25g plain flour; 1 egg beaten; 100g panko breadcrumbs; sunflower oil for frying; 1 gherkin finely chopped; 4 tbsp mayonnaise; 1 tbsp lemon juice and lemon wedges, to serve; 4 brioche hot dog buns; ½ iceberg lettuce shredded