* 1 cup jasmine rice * 1 (13.5 oz) can full-fat coconut milk * 1 cup water * ½ tsp salt * 1½ lbs cod or haddock * 1 large egg * 5 Tbsp yellow mustard * 2 tsp kosher salt * 1 cup panko breadcrumbs * ¼ cup all-purpose flour * Neutral cooking oil (for frying) or cooking spray (for air fryer)