Pear, Chocolate and Hazelnut Cake

Name: Pear, Chocolate and Hazelnut Cake
Prep time: 30 min
Cook time: 1 h 20 min
Total time: 1 h 20 min
Yield: 16 pieces
Ingredients: 1000 g pears; 3 Tbsp lemon juice; 200 g hazelnuts, with skin; 200 g dark chocolate; 250 g unsalted butter; 250 g caster sugar; 4 large eggs; 1 pinch fine sea salt; 1 vanilla pod; 50 g milk; 180 g self-raising flour; 20 g cocoa powder; 1 tsp baking powder; icing sugar