Lemon and elderflower ombre cake

Light Sponges

• 225 g unsalted butter softened
• ½ lemon zest only, no white pith
• 200 g caster sugar
• 4 eggs
• 3 tbsp elderflower cordial
• 225 g self-raising flour
• 3 pinches ground turmeric

Darker sponges

• 225 g unsalted butter softened
• ½ lemon zest only, no white pith
• 200 g caster sugar
• 4 eggs
• 3 tbsp elderflower cordial
• 225 g self-raising flour
• 2 tsp ground turmeric

Lemon butter filling

• 40 g lemon juice (approx. 1 lemon)
• 70 g caster sugar
• 80 g unsalted butter
• 2 eggs

Butter icing

• 500 g unsalted butter softened
• 700 g icing sugar
• 1 tbsp pouring (whipping) cream
• 2 tsp elderflower cordial
• 1 ¼ tsp ground turmeric