Orange sponge cake

• Boil the whole orange in water for 1 hour. Take it out and leave it to cool.
• Preheat the oven to 180 ºC.
• Grease the mold and sprinkle it with flour if necessary.
• Chop the orange and mash it using a blender. It should be a smooth puree.
• Beat the eggs along with the sugar until the mix becomes pale.
• Sieve the flour. Mix it with the raising agent and the ground almonds, and add it to the eggs.
• Mix carefully.
• Add the orange pure and the melted butter.
• Mix the carefully.
• Pour the dough into the mold.
• Bake it at 180 °C for approximately 40-45 minutes.
• Cool for 5 min.

For the glaze

• Make an orange juice.
• Mix the juice with the icing sugar until dense.
• Pour it over the top of the cake.
• Let it set.