Christmas Baked Cod (Portugal)

Breadcrumbs

• 100 g cornbread, cut in pieces
• 15 g olive oil, plus extra for greasing
• 1 garlic clove
• 1 Tbsp fresh coriander leaves

Olive Topping

• 100 g pitted black olives
• 20 g olive oil
• 1 tsp dried oregano
• 1 tsp grated Parmesan cheese
• ½ lemon, juice only
• 1 pinch ground black pepper
• 1 pinch fine sea salt

Cod

• 800 g water
• 500 g floury potatoes, peeled, cut in pieces (4 cm)
• 2 pinches fine sea salt
• 100 g onions, quartered
• 65 g olive oil
• 2 garlic cloves
• 800 g cod fillet, skinless, cut in pieces (4 cm)
• 2 medium eggs, separated
• 70 g double cream