Japanese Chicken Katsu Sando Recipe | Katsu Sandwich

Ingredients

• 250g (9oz) skinless, boneless chicken thigh fillets (4 thighs)
• 30g (1oz) plain (all-purpose) flour seasoned with a pinch of salt
• 1 egg
• 40g (1½oz) panko breadcrumbs
• 4 tbsp neutral oil, such as rapeseed (canola) or sunflower
• 1 tbsp shichimi togarashi (see note)
• 1 tsp toasted sesame seeds
• flaky salt
• 4 slices thick white bread, crusts removed
• 2 tsp softened butter
• 1 tbsp tonkatsu sauce (I use Bulldog)
• 1 tbsp mayonnaise
• 30g (1oz) cabbage, finely sliced