Sardines with parmesan crumbs and fresh tomato sauce

Ingredients

• Sardines with parmesan crumbs
• 16 sardine fillets (250g)
• 1/4 cup (35g) plain flour
• 2 tablespoons milk
• 1 egg
• 2 cups (140g) stale breadcrumbs
• 1 1/2 cup (120g) parmesan cheese, grated coarsely
• vegetable oil, for shallow-frying
• Fresh tomato sauce
• 1 tablespoon olive oil
• 1 large brown onion (200g), sliced thinly
• 5 medium tomatoes (1kg), chopped coarsely
• 2 teaspoons sugar
• 1/3 cup (80ml) dry white wine
• 2 tablespoons fresh basil, chopped coarsely