Lizzie's Gluten-Free 'Extraordinary' Coconut & Lime Cake recipe - The Great British Bake Off

Ingredients

• 180g coconut flour
• 2 tbsp gluten-free baking powder
• 360g golden caster sugar
• 1 tsp salt
• 15 eggs
• 285ml vegetable oil
• 1 tbsp vanilla paste
• 1 tsp coconut extract
• 300g pineapple, peeled, cored and cut into chunks
• juice of 1 lime
• 300g jam sugar
• 2g pectin
• 6 egg whites
• 450g caster sugar
• pinch of salt
• 620g unsalted butter, softened
• red, orange, yellow, green, blue and purple food-colouring pastes