Crispy sesame fish burger with lime mayo

Name: Crispy sesame fish burger with lime mayo
Prep time: 25 min
Cook time: 15 min
Total time: 40 min
Cuisine: Asian
Ingredients: 250g sustainable white fish fillets, such as cod, haddock or pollock; 2 tbsp plain flour; 1 egg , beaten; 4 tbsp dried breadcrumb (we used panko); 2 tbsp sesame seed; vegetable oil , for frying; 1 ripe avocado; juice 1 lime; small pack coriander , chopped; 2 tbsp light mayonnaise; 2 burger buns , split and toasted